Sprint Booster V3
You’ll love the way your Subaru STi performs with the new and improved Sprint Booster V3!After an easy, 10 minute. plug-n-play installation, you'll instantly know why Sprint Booster is the number one, performance add-on. Go from idle-to-full-throttle is a mili-second with no more throttle lag and increased pedal acceleration (whether you're at a dead stop or highway driving.) Make Driving Fun Again!