Included in This Package
COBB 3 Port Boost Control Solenoid
AWDTuning Stumble Fix Kit
Custom Tuning From a COBB Certified Protuner
About the Package
All 2008-2021 STis suffer from a factory flaw that causes pulses in the fuel system. The Stage 1 STi package has a fix for that. With awdtuning's stumble fix kit as well as a 3 port boost controller and custom tuning. you will leave here feeling like you're driving a different car.