Tested to 500+ horsepower

Prevents compressor surge, which leads to lost performance and throttle response when closed then reopening at speed

Simple install, no drilling required

The body, piston and cap are machined from billet aluminum

The cap is anodized and re-machined for easy gripping for spring tension adjustments

The piston and body are hard coated with impregnated Teflon anti-friction matrix

The design has 3 sealing O-rings for leak-proof operation

Quick, crisp pressure relief from the BOV chevron-styled ports, creating the addicting “pshhh pshhh” sound that turbo customers crave

Includes a prefilter to keep dirt/sand out of the valve exhaust ports

Requires EVP Silicone Charge Tube (or aftermarket charge tube) with 25mm BOV port