The 04-07 Subaru STI AVO Up-pipe is one of the best ways to increase the power and throttle response on your turbocharged Subaru. The up-pipe provides a flex section to help with fitment and is constructed of stainless steel to improve durability. The AVO uppipe has an inner diameter which is the exact same size as a stock Subaru turbocharger inlet. This promotes the best possible performance throughout the entire RPM range by maintaining exhaust velocity. Oversizing the inner diameter of the uppipe slows exhaust velocity and creates turbulence as it enters the smaller inlet of the turbocharger, potentially even hurting turbocharger spool up.
- 04-07 Subaru STI AVO Up-pipe
- 250-350 RPM quicker spool up
- Increase horsepower and torque
- Includes flex joint for easier installation
- CNC mandrel bent 304 stainless steel tubing
- Flanges are CNC machined from 304 stainless steel
- Includes all hardware