Optimize Cooling. Maximize Consistency. Drive with Confidence.
The Weak Link in the Tundra’s Twin-Turbo Setup
The 2022–2025 Toyota Tundra 3.4L twin-turbo V6 is a powerhouse—but like every great platform, it has a weak spot. During development of our TruPower by STILLEN Cold Air Intake and TruControl by STILLEN Tuning Module, our engineers uncovered a critical issue in the factory intercooler system: heat soak caused by the OEM cooling layout.
From the factory, Toyota designed the radiator reservoir and the intercooler reservoir to share a single wall. That means the radiant heat from your radiator preloads the intercooler fluid before you even hit the throttle. The result? Hotter intake air temps, timing pulled by the ECU, and less consistent performance—whether you’re towing, cruising, or sitting in traffic.
The STILLEN Solution
The STILLEN Intercooler Reservoir Relocation Kit fixes this issue by separating the radiator and intercooler systems. Instead of sharing heat, your intercooler fluid now has its own dedicated thermal path. By relocating the reservoir to a new position in the engine bay, we keep temps stable and improve recovery time after heat soak.
The result is simple: more consistent performance, mile after mile.
Real-World Tested, Proven Results
We don’t just make parts—we test them. Using an AEM AQ-1 Data Logger with additional sensors, we compared the OEM setup to the STILLEN Intercooler Reservoir in real driving conditions: freeway pulls, idle time, and stop-and-go traffic.
Here’s what we found:
- Faster Cooldown – STILLEN system returned to safe temps in just 2 minutes. OEM system? Still heat-soaked after 8+ minutes.
- Reduced Heat Soak – Our system hit lower peak temps and recovered 4x faster than stock.
- Stable IATs – Better cooling means less timing pulled and more reliable engine output.
This upgrade isn’t about chasing peak horsepower—it’s about keeping your Tundra consistent, especially under heavy load or high-temp conditions.
Key Features
- Eliminates OEM heat soak by separating radiator and intercooler systems
- Improves cooling efficiency during towing, idling, and hot weather
- Quick install: 30–60 minutes with basic tools
- Works with both OEM and TruPower by STILLEN intake setups
- Clean engine bay integration near the passenger-side fender
- OEM-style fit and finish
- Requires Toyota factory coolant for best performance
Applications
- 2022, 2023, 2024, 2025 Toyota Tundra with 3.4L Twin-Turbo V6
- Compatible with OEM intake and TruPower by STILLEN intake
Why It Matters
Heat soak doesn’t just rob you of performance—it creates inconsistency. Whether you’re towing up a grade, merging onto the freeway, or just driving on a hot day, you want your Tundra to feel strong and predictable every time you hit the throttle.
The STILLEN Intercooler Reservoir Relocation Kit gives you that confidence.
Ready to Upgrade?
Don’t let factory heat soak hold your Tundra back. Unlock stable intake air temps, faster recovery, and consistent power with the STILLEN Intercooler Reservoir Relocation Kit.
Have questions? Our team of experts is ready to help. Call, email, or chat with us anytime.
