The process of compressing incoming air to create boost and power also has a nasty byproduct of heat. Heated air lacks the density to make higher horsepower, increases detonation and forces the ECU to pull timing. All of which reduce the power you are looking to create.
For mild modifications and a stealthy look, Perrin's Top Mount Intercooler. These bar and plate cores offer more surface area per square inch, and the overall size is more than 200% of the OEM unit!
Top Mount Intercoolers do suffer from underhood heat buildup, especially when your car is not moving, and while excellent for mild to moderate performance gains, you may want to consider a Front Mount Intercooler if you are looking for substantial power gains.
Fits:
- Legacy GT 05+
- Legacy Outback Turbo 05+ have tight clearance with clutch master cylinder. Fittment requires reclocking of turbo.
- WRX 2008+ Fits no mods.
