Perrin Turbo Sump Restrictor Hats More disturbing was how badly

More disturbing was how badly the factory WRX intercooler performs

From the factory

In true Process West fashion everything you need to fit the Verti-Cooler to your Subaru WRX comes in a complete package

* It flows 400lph (105 gph) at 40 PSI

Easy to Use Controllers:

Perrin Turbo Sump Restrictor Hats More disturbing was how badly. Fix both the burning oil smell and blue exhaust smoke problems associated with your WRX turboback exhaust or Stage 2 and higher WRX by installing the PERRIN Turbo Sump Restrictor. Why you want this: Many customers experience a burning oil problem or blue smoke coming from their exhaust after installing aftermarket J Pipes or turbo back exhaust systems. Installing these parts on 2015+ WRXs causes a change in exhaust pressure, allowing the engine oil