Originally Posted by 08stroker250
Are you asking about a blow off valve or a wastegate? They do totally different things, which why I ask.
A blow off valve helps eliminate compressor surge, which is better on your turbos. However, I do not think this is necessary.
A wastegate is used to reduce back/drive pressure, which is hard on your valvetrain.
Yes but couldn't a BOV help with drive pressure too. If you don't have either a wastegate or BOV (which we don't) and the EGR sytem is turned off, when under high boost and you lift off the throttle quickly, boost would build in the turbo discharge with no place to go and drive pressure will also go up as outlet pressure of the turbo rises. So wouldn't a BOV , relieving the pressure at the outlet of the turbo, help keep drive pressure in check under a high boost , rapid throotle close situation??? I figure a full EGR delete with wastegate would be the best but those are damn expensive.