What is a diverter valve?
A diverter valve (DV) is a pathway for boost when it is not being used by your engine. Whenever the throttle body is closed, like during shifts or deceleration, the boost needs an escape route. If the boost cannot escape during these times, it can back up and cause shocks to the turbo. These shocks will stall the turbo, slowing boost production upon re-acceleration (turbo lag). Even worse, these shocks can cause damage to the turbo. The diverter valve's job is to open when the throttle body is closing or closed, and reroute the boost to the low pressure intake side of the turbo, where it can do no harm.
During development of 750+ hp turbo kits for Porsche models, we came across a late model Porsche factory DV that indeed can go the distance. We designed a few companion parts, and this DV in essence is now a direct replacement for the problematic VW, Audi, and older model Porsche unit. No permanent modifications are required for install, and it is designed as serviceable and less expensive alternative to the Bailey Motorsport DV30 unit that we also carry.
Simple and elegant in its design, yet made for the most demanding of applications
