AVO avoS2X92908A001A Adjustable Solid Boost Actuator 02-07 Subaru WRX / 04-08 Subaru Forester XT
An AVO actuator endows the factory turbo with a more solid boost response while ensuring boost is maintained at a preset level, resulting in increased torque and hp. Where the factory actuator drops boost as the revs rise, the AVO actuator delivers constant boost all the way to redline and beyond. An extremely safe, reliable and effective means of raising your boost level.
Fits to these stock turbochargers: TD04L, TD05L