Invidia Equal Length Big Tube Headers WRX/STI

This is the Invidia Equal Length Big Piping Exhaust Manifold. This type of manifold is ideal for those of you looking to surpass large horsepower figures that would otherwise be limited by the flow capacity of the factory exhaust manifold. When shooting for 600+ horsepower, two of the main ingredients that seem to be key factors are a larger piping diameter along with an equal-length design. This, along with smooth bends being used as much as possible within the manifold design, will allow for an unobstructed flow path for the exhaust to exhale the exhaust gases as efficiently as possible for those with even moderate bolt-ons.

The equal-length design will eliminate the boxer rumble and will create an aggressive 4-cylinder race-inspired sound. These headers will suit stock turbos or any stock-replacement aftermarket turbos with the same inlet flange.

Note- 2.5L sump will be needed to use this product. 06-07 WRX/STI and 03-08 Forester XT will need to modify OEM oil cooler assembly