Subaru COBB AccessPort WRX/STI '15-
Extract maximum power from virtually any modification while retaining the driveability and sophistication inherent in the OEM ECU.
xFlex™ Subaru WRX Pitch Stop Mount
Custom Performance Engineering is very proud to release the xFlex™ EPDM (ethylene propylene diene monomer) rubber Pitch Stop Mount for many Subaru vehicles!
cp-e™ Torpedo In-Line Universal Fuel Filter
cp-e™ Austenite™ Subaru WRX Off-Road Axle Back Exhaust ('15-'20)
OEM parts often times are designed for efficiency of manufacturing, cutting costs and driver comfort. Unfortunately performance is often not a priority – as seen on the very restrictive factory WRX axle back exhaust setup on the 2.0L motor. The boxer exhaust from the factory totally hides the sound of the car. With the factory exhaust, you might as well be driving a vacuum cleaner. The first time we started up the WRX, we knew that we had to uncork the boxer exhaust.
cp-e™ QKspl™ Subaru WRX ECOf™ by GESI® Catted J Pipe / Downpipe
Following the same successful recipe we have used for our other downpipes, our Focus downpipe replaces the choked factory pipe and its restrictive cat. The result of our efforts is reduced backpressure, decreased turbo spool time, and improved dyno results – more than 5% gains.
cp-e™ QKspl™ Subaru WRX Catted J Pipe / Downpipe
Following the same successful recipe we have used for our other downpipes, our Focus downpipe replaces the choked factory pipe and its restrictive cat. The result of our efforts is reduced backpressure, decreased turbo spool time, and improved dyno results – more than 5% gains.
cp-e™ Austenite™ Subaru WRX Dual Muffler Axle Back Exhaust ('15-'20)
OEM parts often times are designed for efficiency of manufacturing, cutting costs and driver comfort. Unfortunately performance is often not a priority – as seen on the very restrictive factory WRX axle back exhaust setup on the 2.0L motor. The boxer exhaust from the factory totally hides the sound of the car. With the factory exhaust, you might as well be driving a vacuum cleaner. The first time we started up the WRX, we knew that we had to uncork the boxer exhaust.













