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infiniti g37

In the realm of car enthusiasts and performance upgrades, few modifications hold as much significance as air intakes. These components play a pivotal role in enhancing engine performance by optimizing the flow of air into the combustion chamber. If you’re looking to boost your vehicle’s power and efficiency, understanding the different types of air intakes and their benefits is essential.

Why Upgrade Your Air Intake?

Before delving into the intricacies of air intake options, let’s highlight why upgrading your stock air intake system is crucial for maximizing performance:

  1. Improved Airflow: Stock air intake systems are designed with compromises to meet various requirements. Aftermarket air intakes offer larger filter surfaces and smoother airflow pathways, allowing your engine to breathe more efficiently.
  2. Enhanced Filtration: Upgraded air filters, whether oil or dry filters, provide better filtration capabilities compared to stock filters. This ensures that only clean air enters the engine, reducing the risk of debris and contaminants causing damage.
  3. Increased Power: By optimizing air intake, your engine can generate more power. Cold air intakes, in particular, draw cooler, denser air from outside the engine bay, resulting in improved combustion and higher horsepower and torque figures.
  4. Customization Options: Aftermarket air intakes come in various styles and designs, allowing you to personalize your vehicle while also enhancing performance.
Dry / Oil / Oiled STILLEN Air Filter

Oiled Versus Dry

When it comes to air filters, two primary options dominate the market: oil filters and dry filters. Here’s a brief overview of each:

Oil / Oiled STILLEN Air Filter

Advantages of Oiled Filters:

  1. Water Resistance: The oil coating acts as a barrier to prevent water from entering the filter material or intake tube, making them ideal for high humidity or wet environments.
  2. Requires Periodic Re-Oiling: Ensures optimal performance and longevity of the filter, adding an extra step to maintenance but maintaining peak efficiency.
  3. Optimal Airflow: Provides slightly better airflow compared to dry filters.
Dry STILLEN Air Filter

Advantages of Dry Filters:

  1. No Oiling Required: Simplifies maintenance and eliminates the risk of over-oiling, which can damage the Mass Air Flow (MAF) sensor.
  2. Multiple Layers of Filtering Material: Utilizes multiple layers of filtering material for superior filtration efficiency, capturing even smaller particles and ensuring cleaner airflow to the engine.
  3. Effective Contaminant Trapping: Traps contaminants while maintaining excellent airflow for engine protection without sacrificing performance.

When choosing between a dry or oiled filter for your cold air intake, consider the driving conditions and your personal preferences. Oiled filters excel in wet environments and require periodic re-oiling for optimal performance and longevity, while dry filters are better suited for dry or dusty conditions and offer simplified maintenance. Ultimately, both types offer benefits that can enhance your vehicle’s performance and driving experience.

Choosing the Right Air Intake

Nissan Maxima STILLEN Short Ram Hi-Flow Air Intake with Dry and Oiled Filter
Nissan 370Z 350Z Infiniti G37 G35 STILLEN Long Tube Dual Gen 3 Air Intake with Dry and Oiled Filter

Now that you understand the importance of air intakes let’s explore the different types available:

  1. Short Ram Intakes: Ideal for enthusiasts seeking a balance between performance and affordability, short ram intakes offer easy installation and increased airflow compared to stock systems. They provide a noticeable improvement in engine response and power output.
  2. Long Tube/Cold Air Intakes: For those prioritizing maximum performance gains, long tube or cold air intakes are the way to go. These intakes draw cooler, denser air from outside the engine bay, resulting in significant horsepower and torque increases. While installation may be more complex, the performance benefits justify the effort and cost.

Conclusion

Nissan Maxima STILLEN Short Ram Hi-Flow Air Intake with Dry and Oiled Filter
Nissan 370Z 350Z Infiniti G37 G35 STILLEN Long Tube Dual Gen 3 Air Intake with Dry and Oiled Filter

Upgrading your car’s air intake system is a surefire way to unlock its full potential on the road or track. Whether you opt for a short ram intake for a practical upgrade or invest in a long tube or cold air intake for maximum performance gains, the benefits are undeniable. Choose wisely based on your budget, performance goals, and installation preferences, and enjoy the exhilarating driving experience that follows. For further assistance in selecting the right air intake for your vehicle, don’t hesitate to reach out to our team of experts at STILLEN. We’re here to help you make informed decisions and elevate your driving experience to new heights.

Nissan 370Z/350Z, Infiniti Q60/G37/G35 STILLEN Short Throw Shifter - 452352

Are you looking to elevate the performance and responsiveness of your Nissan 370Z/350Z or Infiniti G37/G35? Look no further than the STILLEN Short Throw Shifter. Engineered to perfection, this innovative upgrade enhances your driving experience with a host of impressive features.

Nissan 370Z/350Z, Infiniti Q60/G37/G35 STILLEN Short Throw Shifter - 452352

Precision Engineering for Seamless Shifting

The STILLEN Short Throw Shifter is meticulously crafted from high-quality materials, boasting a two-piece construction made of 303 stainless steel. This ensures durability and reliability, even under rigorous driving conditions. Additionally, the shifter is designed to reduce shift distance by an impressive 3/4″, resulting in quicker and more precise gear selections.

NISSAN 370Z/350Z, INFINITI Q60/G37/G35 STILLEN SHORT THROW SHIFTER - 452352

Effortless Performance with Reduced Height

Experience smoother shifting with less effort, thanks to the STILLEN Short Throw Shifter’s 1/4″ shorter height. This ergonomic design not only enhances comfort during gear changes but also contributes to a more engaging driving experience.

Nissan 370Z/350Z, Infiniti Q60/G37/G35 STILLEN Short Throw Shifter - 452352

Quiet Confidence on the Road

Despite its enhanced performance capabilities, the STILLEN Short Throw Shifter remains as quiet as the stock shifter. Say goodbye to unwanted noise or vibration, ensuring a serene driving environment without compromising on performance.

NISSAN 370Z/350Z, INFINITI Q60/G37/G35 STILLEN SHORT THROW SHIFTER - 452352

Easy Installation, Lasting Performance

Enjoy hassle-free installation with the STILLEN Short Throw Shifter, which features a direct bolt-in design. No modifications are required, allowing you to quickly and seamlessly upgrade your vehicle’s drivetrain. Plus, with the inclusion of new Delrin bushings, you can count on long-lasting performance and reliability.

Elevate Your Driving Experience Today

Whether you’re navigating city streets or carving through winding roads, the STILLEN Short Throw Shifter empowers you with unparalleled control and precision. Don’t settle for standard shifting – unlock the full potential of your vehicle with this essential upgrade.

Upgrade to the STILLEN Short Throw Shifter today and experience a new level of driving performance.

Disclaimer: Always follow manufacturer guidelines and consult a professional for installation assistance.

Are you looking to upgrade your vehicle’s exhaust system for a boost in performance and a distinctive sound? Let’s delve into the world of aftermarket exhausts, specifically comparing axle back and cat back systems to help you make an informed decision.

Axle Back Exhaust Systems:

Axle back exhaust systems offer a balance between performance, style, and sound enhancement. They are a cost-effective option compared to cat back systems. By replacing the exhaust components from the rear axle to the tailpipe, axle back systems provide a noticeable change in exhaust tone and aesthetics.

2022+ HYUNDAI ELANTRA N STILLEN CAT-BACK EXHAUST SYSTEM

The benefits of axle back systems include:

  1. Improved Sound: Experience a richer and more aggressive exhaust note without breaking the bank.
  2. Enhanced Style: Many manufacturers offer customization options, including various finishing tips such as carbon fiber, blue burnt tips, or polished stainless steel.

Cat Back Exhaust Systems:

For those seeking maximum performance gains, cat back exhaust systems are the go-to choice. Unlike axle back systems, cat back upgrades replace components from the catalytic converters to the tailpipe, eliminating restrictive elements like crush bands and mufflers.

Key advantages of cat back systems include:

  1. Optimized Performance: By employing mandrel bent tubing and less restrictive mufflers, cat back systems allow exhaust gases to exit more efficiently, resulting in increased power.
  2. Comprehensive Upgrade: Cat back systems provide a holistic enhancement to the entire exhaust system, ensuring a consistent boost in performance.

Customization Options:

One of the exciting aspects of upgrading your exhaust system is the ability to customize its appearance. Manufacturers offer various finishing tips, allowing you to choose between carbon fiber, blue burnt tips, polished stainless steel, or even unique finishes like black ceramic coating.

In conclusion, whether you opt for an axle back or a cat back exhaust system depends on your priorities. If you’re looking for a cost-effective way to enhance sound and style, an axle back system might be the ideal choice. However, if maximizing performance gains is your primary goal, investing in a cat back system will provide a comprehensive upgrade for your vehicle’s exhaust.

Upgrade your driving experience, unleash the full potential of your vehicle, and make a statement on the road with a carefully chosen aftermarket exhaust system.

STILLEN Exhaust Playlist on Youtube

STILLEN is thrilled to announce a significant development for automotive enthusiasts looking to boost their Nissan and Infiniti models’ performance. Our renowned Gen 2 and Gen 3 Stillen Intakes, known for delivering unparalleled power and precision, now come with even more accessible pricing in 2024.

Unleashing the Power: Gen 2 and Gen 3 Stillen Intakes

The Gen 2 and Gen 3 Stillen Intakes have been game-changers in the automotive performance realm, and their compatibility extends to various Nissan and Infiniti models, including the G37, 350Z, 370Z, and Q50. Today, we shine a spotlight on the Nissan 370Z Gen-3 Air Intake and its exceptional features, while also introducing the Gen 2 Stillen Intakes.

Nissan 370z Nismo Engine Bay

Key Features of the Gen 2 and Gen 3 Stillen Intakes:

  • Ultra Long Mandrel Bent Polished Aluminum Intake Tubes
  • Oil-Free and Low Restriction Design
  • Increased Throttle Performance and Horsepower
  • Easy to Clean with No Need to Re-Oil

Benefits That Speak Volumes:

  • CARB EXEMPT EO# D436-22 (2009-2016 ONLY)
  • Impressive 17.5 RWHP / 13 WTQ Gain for Enhanced Acceleration* (Gen 3 – 370Z Only)
  • Designed and Manufactured at STILLEN HQ, Inspected Multiple Times for Quality and Fit
  • Fits Various Models, including 370Z and 370Z Nismo (Nismo models may require slight modification)
Infiniti of Kansas City Showroom Q50

Why Gen 2 and Gen 3 STILLEN Intakes?

STILLEN has been at the forefront of high-performance cold air intakes, and our journey with the Nissan Z34 and Infiniti VQ37 equipped cars has been nothing short of groundbreaking. We started with the Gen 1 Cold Air Intake, offering a small gain in power and a captivating sound enhancement. The Gen 2 Long Tube Intake refined the design and power output, becoming one of our best-selling air intake kits.

The skeptics fueled our determination to push the boundaries further, leading to the development of the Generation 3 Ultra Long Tube Cold Air Intake Kit for the Nissan 370Z. At STILLEN, all our products are designed and manufactured in-house, giving us the ability to test numerous configurations and fine-tune our designs until we achieve the desired results.

Unprecedented Power Gains [Gen 3]:

Our R&D team tirelessly tested over 50 variations before perfecting the Gen 3 design for the VQ37HR engine. The result? A dyno-proven 17.5 Horsepower (WHP) and 13 ft/lb (WTQ) gains on the 370Z with STOCK ECU TUNE. This achievement is unparalleled among performance intakes for non-turbo/non-SC’d cars.

370Z Gen3 Intake

Optimized Design for Maximum Performance:

Both the Gen 2 and Gen 3 intakes boast updated designs with integrated systems of variable diameter tubing and steps, maximizing air velocity. The strategically placed large STILLEN air filters ensure exposure to the coldest-possible incoming air, enhancing performance.

Easy Installation for Maximum Impact:

While the power gains are extraordinary, we’ve ensured that the installation process is straightforward. While removal of the front fascia clip and slightly enlarging the holes through the front core support is recommended for optimal results, it’s worth noting that the bumper removal process is quite manageable with basic hand tools.

New Lower Prices for 2024: Elevate Your Ride with STILLEN Gen 2 and Gen 3 Intakes!

In celebration of a new year, STILLEN is excited to offer our Gen 2 and Gen 3 Stillen Intakes at lower prices for 2024. Elevate your driving experience, embrace the power, and make a bold statement on the road. Don’t miss out on the opportunity to enhance your vehicle’s performance with the best in the business.

Visit our website to explore the new prices and take the first step towards an exhilarating ride. STILLEN – where cutting-edge design meets unparalleled performance!

*Results May Vary!

Check out STILLEN’s Youtube channel for more STILLEN Intakes videos:

STILLEN is excited to talk about one of the most popular parts that we’ve ever made, the Gen 3 Cold Air Intake for the Nissan and Infiniti platform.

Since 1986, STILLEN has been the leader in Nissan and Infiniti high performance tuning. In 2009 Nissan came out with the Nissan 370Z. It was a hit of a car with a 3.7 liter V6 engine. It’s a fantastic platform, one that STILLEN really enjoyed modifying.

STILLEN immediately went to work on an air intake system for the vehicle. It’s one of the things that we’re known for here at Stillen and one of the things that we really prioritize when it comes to product development.

Infiniti Q50 Intake by STILLEN

So the first thing we did was we came up with a very popular setup that we used a lot on the 350Z. It’s called “Gen 2” a short ram intake, basically it was a polyurethane air shield, an air filter and a velocity tube inside the entire system. It was a very good part that worked well but it didn’t produce a lot of power. Overall the intake improved the sound and the performance of the vehicle.

However our engineering team was dedicated to finding a system that would make a big bang. So they went to work for more than a year and came up with 56 prototypes. When the team finalized the Gen 3 long tube dual cold air intake system for the Nissan 370Z, Infiniti G37 and G35 Sedan, and the Nissan 350Z HR all four of those applications have really been successful with this Gen 3.

What’s in the Box

STILLEN Gen 3 Dual Hi-Flow Ultra Long Tube Cold Air Intake for Nissan 370Z, Nissan 350Z, Infiniti G37, Infiniti G35 and Infiniti Q60

So you get the aluminum intake tubes, two air filters, mounting hardware and the STILLEN couplers. For the G37 and G35, you’ll receive a polyurethane air shield. The air shield deflect any water, debris or anything else that could damage the air filters.

The Best Intake in the Market

STILLEN Gen 3 Dual Hi-Flow Ultra Long Tube Cold Air Intake for Nissan 370Z, Nissan 350Z, Infiniti G37, Infiniti G35 and Infiniti Q60

Now what makes the STILLEN Gen 3 the best cold air intake on the market? To start, STILLEN put more than a year of engineering and developing to make the Gen 3 Cold Air Intake. The intake has a 3″ inlet tube that next down into a 2.5″ inlet tube. The 2.5″ inlet tube leads all the way up to the throttle body. We have CNC machine billet aluminum mass airflow sensor bosses welded to aircraft quality 6061 T6 aluminum.

STILLEN Gen 3 Dual Hi-Flow Ultra Long Tube Cold Air Intake for Nissan 370Z, Nissan 350Z, Infiniti G37, Infiniti G35 and Infiniti Q60

Some of the most popular questions that we’ve been getting lately are why did we go with aluminum and why did we go with a 2.5″ diameter tube. STILLEN’s team chose a 2.5″ diameter tube because that is the size that is closest to the factory mass airflow sensor. If we were to change that, you absolutely have to recalibrate the entire ECU. You would have to re-tune the car in order to get it to run the larger diameter tube and increasing the cost tremendously. You’re talking about a $700 tuning license and hours on the dyno. So a $500 to $700 air intake system at the absolute high end, now becomes a $1500 intake system.

We’ve had some customers tell us that they even needed new fuel injectors when running a higher tube diameter intake. Now with new fuel injectors, that has the potential to be a $3000 air intake system. For us at STILLEN, that was just not something that we felt was really necessary. The gains don’t really outweigh the cost when you’re talking about a slight increase in power over a 2.5″ that bolts right on. The Gen 3 Cold Air Intake doesn’t require any additional tuning so for those reasons we chose the 2.5″ diameter.

Pros and Cons

STILLEN Gen 3 Dual Hi-Flow Ultra Long Tube Cold Air Intake for Nissan 370Z, Nissan 350Z, Infiniti G37, Infiniti G35 and Infiniti Q60

There are a number of benefits to a silicone tube. First, the cost of silicone is significantly less expensive than aluminum. There’s a lot of work that goes into an aluminum tube. Just the material cost alone and then all the labor to bend it, cut it, weld it, prepare it, polish it cost more. There’s quite a lot more cost than what goes into a silicone tube.

However, the downside with a silicone tube is that if the silicone tube is reduced to get through the front core support then that becomes a restriction. You have to modify that front core support and open it up to fit a 2.5″ tube in order to get sufficient airflow coming through in order to produce the power that you need. A silicone tube simply won’t give you the power that you need because it becomes a restriction unless you modify that front core support.

In addition to that silicone tubes, they’re significantly thicker than aluminum tube. So aluminum tubes can get away with 0.065 wall thickness, it’s a minimal wall thickness and much air volume as possible. When you go with a silicone tube it’s substantially thicker wall requires much more modification on the front core support in order to get it through without impeding the airflow.

The other disadvantage to a silicone intake tube is the fact that silicone is very flexible. Your engine is a vacuum pump, it sucks in air as hard as it can. So as you’re reaching full RPM and you have that air rushing through this intake tube and you’ve got this long stretch of open tube. The engine actually produces so much vacuum that it can actually suck the silicone shut. We’ve seen this on a number of different vehicles even some of them that come from the factory with rubber or silicone inlet tubes.

STILLEN Gen 3 Dual Hi-Flow Ultra Long Tube Cold Air Intake for Nissan 370Z, Nissan 350Z, Infiniti G37, Infiniti G35 and Infiniti Q60

For that reason we felt that aluminum was going to be much more rigid, much more durable and was the ultimately the best choice to use. So those are just a few of the reasons why we chose the materials that we did and how we came up with the design for this intake system.

Final Thoughts on the Gen 3

STILLEN Gen 3 Dual Hi-Flow Ultra Long Tube Cold Air Intake for Nissan 370Z, Nissan 350Z, Infiniti G37, Infiniti G35 and Infiniti Q60

STILLEN went through 56 different prototypes. It was more than a year of engineering before finalizing the design of the Gen 3 intakes. To be able to bring the best cold air intake is something STILLEN is very proud of. That’s something we try to achieve with every single STILLEN product. The Gen 3 intake system has been the most popular intake on the market for Nissan/Infiniti for the last decade.


Featured Article

2019-2020 Chevy Silverado 1500 TruPower by STILLEN Cold Air Intake Scoop - TP403501

Chevrolet Silverado 1500 Trupower by STILLEN Cold Air Intake Scoop

The STILLEN design allows for the air to come directly into the intake system without being warmed by the radiator. The STILLEN intake scoop isn’t disrupted by the lattice type material in the radiator shroud. This design eliminates the pre-heating and the turbulence caused by the factory system.


STILLEN Toyota Tundra Cold Air Intake

STILLEN Toyota Tundra Cold Air Intake

With this particular air intake STILLEN has increased the volume of the air box while also increasing the flow.  The increased flow comes from the radiator shroud inlet system. Which guides air through the vehicle’s core support and into the larger poly-ethylene airbox.  This design lowers the intake air temperatures back to ambient more than 60 seconds before the factory intake system. Its far sooner than any other aftermarket intake available.

The first annual Nissfest Norcal 2019 took place this past weekend in Modesto, CA – 6/8/2019. STILLEN was proud to sponsor the event that brought out a full field of incredible Nissan and Infiniti vehicles from both Northern and Southern California.

Drift Demos, great weather and awesome vehicles entertained all that attendees.


Nissfest Norcal 2019


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For very hot running engine, an oil cooler kit is a must have. Too much heat is an enemy of any combustion engine. Having your oil temperature up to 30 degrees cooler during normal driving will add many 1000’s of miles to the life of your engine and improve performance.

Oil is rerouted to the oil cooler outside of the engine and is cooled prior to circulating back into the engine. The oil cooler kit is not too dissimilar from a car’s radiator. You will have to use up to two quarts more oil to fill up the coils and lines in the oil cooler unit. The end result is a healthier engine that will last much longer than an engine without an oil cooling unit.

FEATURES AND BENEFITS

  • Street and Race Kit
  • 19 – 25 Row Core
  • Increased Oil Capacity
  • Helps Prevent Engine Oil from Overheating
  • Includes Goodridge Stainless Steel Lines, All Needed Fittings, Hoses and Hardware
  • Thermostatic Sandwich Plate – Prevents Overcooling of Oil
  • Vehicle Specific Bracket

OIL COOLER KIT AVAILABLE FOR*

  • Nissan 370Z and 350Z
  • Infiniti G37 and G35
  • Infiniti Q50 and Q60
  • Nissan Maxima and Altima
  • Nissan Titan

*Check Year, Make, and Model to Confirm Availability

If you’re interested in keeping your car cool with a STILLEN® Oil Cooler Kit, call us at 866-250-5542 to speak with our experienced performance Specialists, or chat live with the team at www.stillen.com – thanks for joining us! Catch you next time.

Infiniti_G37_Marina_340whp_noS-(6)

A lot of the folks who aren’t big fans of the Nissan VQ-series V6es like to say that these cars can’t make power naturally aspirated. Marina’s Infiniti G37 Coupe proves otherwise. While from the outside, her G looks largely stock – you’d be hard pressed to tell her G from your average preowned G37 on the lot at the Nissan dealer where she works, yet with a good tune and the right combination of performance parts, this G37 is laying down 340 horsepower at the rear wheels, which is pretty damned impressive.

Infiniti_G37_Marina_340whp_noS (3)

Up front, the only real hint of what lies beneath is the faint hint of a set of STILLEN Gen 3 Intakes for Infiniti G37 peeking through the matte black front grille. Good for almost 20whp on their own, the Gen III Intakes definitely contribute to the car’s performance.

Infiniti_G37_Marina_340whp_NGEDIT (1)

The rear of the car sports a STILLEN Cat-Back Exhaust for Infiniti G37, paired with a set of performance headers to boot. The dual round tips compliment the G37’s styling nicely and lets the VQ sing you the song of its people with wonderful clarity. The bonus of another bump in horsepower and torque is just the cherry on top to a system that looks and sounds fantastic – and a VQ37HR at full song always turns heads.

Infiniti_G37_Marina_340whp_noS-(5)-A TRANSPARENT

To get the most out of your performance parts, while all the parts we make here at STILLEN are designed to make power on the factory ecu map without setting a CEL, it’s always best (for power) if the ECU is expecting more airflow from an intake or exhaust for Infiniti G37 coupe.

Infiniti_G37_Marina_340whp_noS-(11)

Running an UpRev “ARC” Tune, Marina’s Infiniti G37 coupe laid down 341whp and 282wtq on a DynoJet chassis dyno. Torque is almost flat as a table through 4000rpm and tapers downward as the revs shoot towards that 7800rpm redline. Horsepower is almost a straight line, rising in an extremely linear fashion before hitting peak power at 7300rpm or so. Though we haven’t driven or seen Marina’s G in person, it’s safe to say that this thing would be an absolute riot to drive on the street.

Infiniti_G37_Marina_340whp_noS-(10)

Like we said, this G37 is fairly close to stock – just a handful of basic STILLEN bolt ons coupled with a tune has really woken up the car. Here’s a better view of the STILLEN G37 intake as it appears under the hood here- as you can see there’s no cheatery going on here – just simple bolt ons.

Infiniti_G37_Marina_340whp_NGEDIT (2)

In addition to the parts directly contributing to its power output, Marina also has replaced the heavy dual-mass OEM flywheel with a lightweight ACT Performance Flywheel for Infiniti G37 and ACT 6-Puck Clutch for G37 to make sure as many ponies as possible are making it to the rear wheels. While not quite as light as the STILLEN flywheel, the ACT Flywheel is just 18.4lbs, whereas the stock flywheel is a whalloping 26lbs. While on the face of it, 7-8lbs of difference doesn’t sound like anything, but when you consider the physics involved with that part, it’s a heck of a lot more difference than just shaving 7lbs off the car’s curb weight. (Check out our post about the benefits of a performance flywheel here)

Infiniti_G37_Marina_340whp_noS-(7)

With all the basic bolt ons covered, you might think Marina’s done with power. Oh no – she tells us that “500whp is my end goal, but I’ll honestly probably end up settling for 450 or somewhere around there. I work at a Nissan dealer so I have access to all the stuff that breaks for a somewhat decent price. If I try to surpass 450whp, I’ll end up building the motor. Since it’s going to end up a track car, I’m sure I won’t want to stop at 450.”

Infiniti_G37_Marina_340whp_noS (4)

While the big stuff is covered, until the supercharger is handled, there are still a few minor mods left that can be done. “‘(while) I’m very very happy with it, I’m probably going to change my TBs soon, and do as many little things to milk as much hp as I can NA.”

It sure sounds like she’s on the right track with the build, and we can’t wait to see what it evolves into when it’s finally ‘done’.

If you’re looking to get more power out of your Z, G or Q naturally aspirated, this car proves that not only can it be done, but there’s a good bit of power to be had before forced induction. Call us today to see how we can get more out of your car!

Thanks for joining us, and we’ll see you next time.

Lightened Flywheels for 2003-06 Nissan 350Z [Z33], 2003-07 G35, Nissan 370Z [Z34] & Q60 3.7
Don’t Miss this Upgrade When Upgrading or Replacing your Clutch – Get More WHP & Faster Response

STILLEN FLYWHEEL CLEAN BY ITSELF

Most enthusiasts know that replacing the OEM clutch with a high performance unit transfers more power to the ground, improving acceleration and performance. What not everyone realizes is that there are two sides to the clutch system besides the disc and pressure plate – the flywheel is just as important.

When it comes time to replace your OEM clutch, or if you’re thinking about upgrading to a high performance clutch in your Nissan 350Z or Infiniti G35, 370Z, G37 or Q60 3.7, you’re likely worrying about stuff like how many pucks your clutch has and its friction material – but you’re probably not thinking about your flywheel and really, missing this upgrade while you have everything apart during a clutch install is doing yourself and your Z, G or Q a disservice.

STILLEN FLYWHEEL CLUTCH CLEAN (4)

What not everyone realizes is that a lightened flywheel is one of the best modifications you can make to any manual transmission vehicle. So? The engine feels much more powerful and responsive- the whole car generally feels more lively. A lightened flywheel won’t ADD horsepower or torque, but rather, with it, you regain power and response that is normally consumed by drivetrain loss. By reducing some of the loss from the drag of the drivetrain on the engine, more engine power makes it to the wheels.

Flywheel Animation via Wikipedia Commons 

What does a flywheel do, anyway?
To understand why a lighter flywheel makes such a big difference in performance and response, you need to understand how a flywheel works. To put it simply, a flywheel is an energy storage device – the flywheel stores inertia energy. The purpose the flywheel in your car serves is smoothing out the fluctuations of torque on the crankshaft, as well as helping to maintain engine speed (RPM) at a designated level. In other words, the flywheel helps keep your engine from stalling as you feather on the clutch when taking off from a standstill, for example.

How does a flywheel work in practice?
Ever play with one of those “pull-back” toy cars as a kid? Those pull back toy cars rely on a flywheel to work. The wound up spring spins a flywheel, the spinning mass of the flywheel creates inertia, meaning the flywheel wants to keep spinning, thus keeping the toy car moving after the spring has delivered its initial thrust.

Imagine trying to run in work boots. Now  imagine trying to run again after changing the work boots for a pair of running shoes. Same idea. As your engine turns, it takes some energy to get the weight of the flywheel moving. In turn, the flywheel wants to keep moving, helping smooth operation and idle. The more mass a flywheel has, the more energy it will take for your motor to gain RPM. Most manufacturers opt for a heavier flywheel, the reason being that it makes the engine less likely to stall and much easier to use in stop-start traffic. When you reduce the weight of the flywheel, the vehicle feels more powerful as a result, because less energy is required to overcome inertia and get the flywheel moving. As a result, more of the engine’s motive power is transferred to the wheels, and since there is less weight holding back the engine, it will gain and drop revs more quickly as well.

There’s an anecdote that illustrates this brilliantly, funnily enough from an old Kung Fu movie, but hear us out here. So, there’s this climactic fight between two skilled fighters. The whole movie, one fighter is always seen wearing heavy ankleweights… but even with the weights on, he’s very quick, but his opponent is even faster. Just before the fight, to everyone’s surprise, the guy removes his ankle weights. With the resistance of the weights gone, the fighter has use of his full potential, giving him the extra performance needed to best his opponent. That’s effectively what’s happening when you fit an engine with a lighter weight flywheel.
Removing the unnecessary resistance unleashes your engine’s full potential.

Infiniti G35 AASCO Flywheel Install Andy Ash (1)

Your Flywheel & Clutch Are Both “Wear Items”

Most people don’t consider that your flywheel wears out, just like your rotors wear away on your brake system. Not everyone realizes the flywheel’s friction surface wears out too, so some folks neglect to resurface or replace their flywheel when installing a new clutch disc, and that’s really only doing half of the job. The clutch grabs onto the flywheel’s face, wearing it out as well as the clutches’ friction material, so like your brake pads, rotors and clutch, it too is a wear item and should also be serviced whenever you’re replacing the clutch.

AASCO Billet Flywheel

On the Nissan VQ engines used in manual transmission-equipped 350Z, 370Z, G35 , G37, and Q60 3.7 the difference is especially noticeable. In the 370Z and its VQ engined sisters, the OEM flywheel weighs in at a whopping 25-26lbs – by contrast, the STILLEN Flywheel for Nissan 370Z and Infiniti G37/Q60 tips the scales at only 14.25 lbs, a difference of more than 10lbs. For the earlier Z and G models, the STILLEN Flywheel for Nissan 350Z / G35 offers similar weight reduction.

As the flywheel turns, centrifugal force and inertia make the flywheel act as if it is many times heavier than it is, which holds your engine back significantly.

ALTERNATIVE OPTIONS

act600590

As an alternative, the ACT Streetlite Xact Flywheel for 370Z, G37 and Q60 3.7 is slightly heavier at 17.4lbs, and that’s still a big improvement over the stock 25lb part. The additional mass makes it just a bit friendlier on the street while still offering the benefits of a lightweight flywheel, and it’s a good bit less expensive at just $366 (as of press time).

The tradeoff is that this flywheel is non-serviceable, so once you’ve worn it out, you’ll need a new unit (as opposed to resurfacing or replacing it), and of course, it will be a little slower to drop or gain revs compared to the STILLEN unit because the ACT unit is 3lbs heavier, but it’s still a significant improvement over stock.

 

STILLEN FLYWHEEL CLUTCH CLEAN (3)

Face to Face: The black disc on flywheel is what makes contact with the face of the clutch

The clutch and the flywheel are as critical to each other as peanut butter and chocolate are to a Reese’s cup – it’s not a Reese’s without both, so be sure to service your flywheel whenever you replacing the clutch. Doing one without the other is kind of like replacing just your brake pads without servicing the worn out rotors. While yes, it’ll bolt together if you skip replacing the rotors during a brake job or resurface the flywheel when doing a clutch, it’ll ‘work’, but it won’t perform as well as it should or could.

More Affordable Than You Think

The other thing is, the 370Z, G37, Q60 3.7 and late-production 350Z models use a dual mass flywheel. What this means is that the average machine shop cannot resurface it, it has to be sent out to a specialty machine shop, meaning that for many people, an expensive OEM replacement flywheel is the only viable option.

Trouble is, a replacement OEM flywheel is a whopping $1200 USD at press time. By comparison, the STILLEN flywheel is less than half that at $535 USD (at press time), saving you nearly $650. What’s unique to the STILLEN Lightweight Flywheel for 2008-10 Nissan 370Z is that unlike virtually every other lightened flywheel available for these cars, the STILLEN flywheel is rebuild-able. This means that when its friction surface wears out, you’re only buying a $125 replacement component. With a flywheel that is not rebuildable, you’ll be stuck buying a whole new flywheel when it wears out.

The reality is, if you’re upgrading or replacing your clutch, you’re already doing the majority of the labor needed to install a lightweight flywheel. That makes a lightweight flywheel the perfect “While I’m At It” mod.

For your convenience, STILLEN also offers a flywheel and clutch package, the STILLEN High Performance 350Z / 370Z / G37 Clutch / Flywheel Combo, which includes the STILLEN Flywheel, an ACT Clutch / Pressure Plate and of course, a new Pilot Bushing with clutch alignment tool. Available for $989.50 (as of press time), this package saves you some green when compared to buying the included items one-by-one.

We’ve covered the performance benefits and potential cost savings, there is one more CRITICAL item you really should replace while you’ve got your car taken apart, and not replacing this one little part can really bite you in the behind later on, and take your Z, G or Q out of commission when it goes.

DON’T FORGET THE SLAVE CYLINDER! OR ELSE…

ZSpeed Performance Slave Cylinder GRAYED
One of the notorious issues specific to the 370Z, G37 and Q60 3.7 is the clutch slave cylinder. The OEM Nissan unit is a rather brittle little plastic part – and ludicrously prone to failure.

The Problem
If you’re installing an aftermarket performance clutch in your 370Z or G37, it is a GUARANTEE that your OEM Nissan clutch slave is going to fail on you in the very near future. We don’t say that kind of thing lightly. The OEM clutch slave might survive with a stock clutch, but it can’t manage an aftermarket clutch. Yes, you can use an OEM Nissan replacement for your failed clutch slave, but remember, the design and materials are still the same, which means the replacement will also inevitably fail too.

The frequency of failure isn’t an exaggeration, either. The OEM slave really is that bad on the 370Z, one only needs to google “370Z problems” to see just how frequently the CSC’s fail, and we’ve even seen it firsthand on customer vehicles – in one case, the customer opted to skip the clutch slave when installing a new clutch disc despite our warnings, and unfortunately, within 2 months the OEM CSC unit failed, just as we had cautioned it would. The customer’s 370Z had to be taken apart all over again to replace it, and when you consider paying for the labor of dropping a transmission twice, that’s a rather pricey gamble.

The Solution

ZSpeed Performance Slave Cylinder MAIN
This brittle and leak-prone plastic OEM CSC was such a nuisance, it drove ZSpeed Performance to develop their heavy duty ALL-METAL Concentric Clutch Slave Cylinder for the 370Z and G37 (and late 350Z’s with the HR engine), and given the ridiculous failure rate, the experts at STILLEN highly recommend ZSpeed Performance’s Heavy Duty Clutch Slave as a part of any G37 or 370Z clutch service. On the earlier 350Z and G35, the slave was serviceable from the outside of the transmission… on the 370Z and G37, you’ve got to do all the work you’d normally do while replacing the clutch in order to replace it.  We STRONGLY recommend installing this upgrade with any clutch replacement – take our word for it, you’ll regret it later if you skip the slave when replacing or upgrading your clutch.

A replacement OEM plastic clutch slave from Nissan is around $125, while the ALL-METAL Heavy Duty Zspeed Clutch Slave is a bit spendier at $325 (as of press time), but consider, for that additional cost, you’re getting all metal construction. That means you have peace of mind to drive and enjoy your car, as you’ve replaced the ticking time bomb of failure with a more durable version that will serve you reliably for many miles to come.

We realize we’re beating a dead horse a bit here, but seriously, save yourself the tow truck, the labor and the heartache and replace the slave while you have everything apart. After all, it’s not a matter of if, but WHEN your clutch slave is going to fail, and it would suck to have to pay for the labor twice. You’ll thank us later.

STILLEN_370Z_El_Toro_3

Is a Lightweight Flywheel Street-Friendly?
The caveat to a lightweight flywheel is that going too light can cause driveability problems and make stop-start traffic challenging. The STILLEN Flywheel is designed with streetability in mind, offering both significantly enhanced performance and response while also keeping enough mass to ensure the car won’t stall out in stop/start traffic like it may with an ultra-lightweight RACING flywheel. The experts at STILLEN have spec’d out a flywheel with a great balance of weight reduction and real-world usability.
We do want to note here that a lighter flywheel will cause some light gear chatter- but pretty much any flywheel other than the OEM unit will chatter, too. If mild gear chatter is an issue for you, resurfacing or replacing your OEM flywheel could be a possible alternative option.

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Conclusion

In short, the STILLEN flywheel offers a major improvement in performance and response you’ll really feel on the ol butt-dyno and it’s less than half the price of a replacement OEM flywheel. Even if you add in the Zspeed Clutch Slave, you’re still spending hundreds less than an OEM flywheel for an increase in performance and response that few other mods can offer.

That about wraps it up – if you have questions or would like to order your own, reach out to us at 866-250-5542 to speak to our knowledgeable staff, and if the phone’s not your thing, you can always email us at sales@stillen.com or talk to us in real time by using the Live Chat on STILLEN.com

Busy going to school in Southern California, the owner of this 2012 Infiniti G37 Sedan wanted a way to unwind and have some fun with his vehicle this summer. However, like many of our first-time customers, he is new to modified vehicles and wasn’t sure where to start. Our experts, who are enthusiasts themselves, love talking with our customers about the plans they have for modifying their vehicles and offering suggestions to help them get the most from modifications.

In this case, our experts suggested a STILLEN Gen 3 air intake kit for Infiniti G37 (good for 18whp / 13wtq on its own), STILLEN Infiniti G37 Coupe Cat-Back exhaust (another 19whp by itself). With the bolt on performance mod shopping list nailed down, this customer quickly agreed that this was the best way to get the power and performance he wanted.

G37 Sedan on STILLEN Dyno After Exhaust and Intake Installation and Tune

STILLEN Gen 3 Intakes

The STILLEN Gen 3 Cold Air Intake is Dyno-Proven to Deliver 18.5WHP Gains

As one of our bestselling air intakes, the STILLEN Gen 3 intake is a go-to for anyone looking to get more power from their VQ37 engine.

With two large filters strategically placed in front of the radiator and varied diameter tubing, this intake kit provides clean, cool air to the engine and safely maximizes power.

STILLEN Cat-Back Exhaust

In addition to getting a STILLEN Gen 3 air intake installed, this customer also got a STILLEN G37 Sedan cat-back exhaust installed. This performance exhaust features mandrel bent tubing and is crafted from high grade stainless steel.

The end result is an durable exhaust that offers significant performance gains with power you can feel across the power band. Plus, it also features STILLEN’s signature exhaust sound that comes to life when under throttle!

G37 Sedan Dyno Chart - 56 HP Gain After Exhaust and Intake Installation and Tune

Dyno Results

Combined, the intake and exhaust helped this G37 sedan make 284 HP, which was a gain of almost 40 HP from stock. After a little refinement, we brought the final number up to 302 HP for a final gain of over 56 HP!

What’s Up Next?

Like most visitors to the STILLEN performance shop, the modifications he made during this visit are just the start. Next, he’s looking to upgrade his wheels, tires and suspension. Then, he plans on customizing the exterior with a couple STILLEN body components. If all goes well with these modifications, he’s even thinking of getting a STILLEN supercharger. Once he’s done bringing his vision to life, this is going to be one very nice Infiniti G37 Sedan!

Contact Us

If you’re ready to get more power from your vehicle, improve its handling or have other upgrades in mind, be sure to give us a call! Our experts will be happy to help you strategize your next build simply give us a call at (866) 250-5542!