Stage 1 is where to start your quest for additional power and response from the WRX. Included in the Stage 1 Kit is the highly regarded AccessPORT which is used to reprogram the factory engine computer, unlocking additional horsepower and torque from a WRX.
The Stage 2 Kit continues where the Stage 1 Kit leaves off. Included with Stage 2 is the AccessPORT, as well as the COBB Tuning Turbo Back Exhuast. Starting off the COBB Turbo Back system is the COBB Downpipe. The CAD designed bellmouth of the COBB downpipe makes sure the airflow is smooth and efficiant. The system finishes with the modest tip of the Cat Back section that sits completely flush with the bumper. With a subtle, but deep exhaust note, the COBB exhaust achieves the highest performance while still retaining a stock like appearance.