Boomba Racing 75MM Throttle Body (Natural Aluminum) - 2002-2005 Subaru WRX prop65_reproductive then you will need to

then you will need to properly ground the ECU from another source

IAG's elbow can be rotated 180 degrees

Outrigger Mount

Engineered for track-ready performance

Factory O2 sensor bung positions retained

Boomba Racing 75MM Throttle Body (Natural Aluminum) - 2002-2005 Subaru WRX prop65_reproductive then you will need toWRX STI 75 MM Throttle Body Upgrade Designed to work seamlessly with the factory idle control and TPS, this throttle body is built for 2004 and earlier WRX and STI models using Drive by Cable systems. Crafted from CNC machined billet aluminum, its enlarged 75 mm bore increases throttle cross sectional area by nearly 56% over stock, delivering noticeable horsepower gains and sharper engine responseeven with factory intake pipes and turbo. The kit