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.
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.
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.
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.
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.
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.
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)
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.”
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.
