Originally posted by JayBoSVT:
Originally posted by Dustyn:
If it stayed closed at idle it would not be working properly.




So you're not gonna be in vacuum at idle? I'm lost, please explain.



You are correct. Dustyn's comment does not make sense.

A bypass/blow off valve opens at a preset psi (pressure) level not a vacuum level.

You normally want to set it about 2psi higher then the WOT operating psi. This gives leeway for it to stay closed and not bleed boost. In other words don't run 12psi on a valve rated for 5-10psi.


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.