Turning up the boost in your B9 S4 is all fun and games until you blow a charge pipe coupler. The restrictive plastic charge pipes rob power and aren’t meant to handle more than stock boost levels which is why we have created a solution. Our brand new Post Throttle Valve Performance Charge Pipe Kit is designed to hold more boost, eliminate restrictions, and look excellent doing it.
Audi B9 S4 Post Throttle Valve Charge Pipes
Audi B9 S4 Post Throttle Valve Charge Pipes
Audi B9 S4 Post Throttle Valve Charge Pipes
Audi B9 S4 Post Throttle Valve Charge Pipes