Project S4: Forge Motorsport Blow-off valve

Turbocharged cars, like my Audi S4, have blow off valves (BOV’s), often called dump valves, fitted to them. They prevent compressor surge “loading,” by allowing compressed air to vent to atmosphere (or be re-circulated), to reduce wear on the turbocharger and engine. Nine times out of ten, manufacturers use horrible, cheap plastic BOV’s, which might Read more about Project S4: Forge Motorsport Blow-off valve[…]