Blow Off Valve
#1
DRFTRX7
Thread Starter
Blow Off Valve
I am looking for the most responsive blow off valve (not the one that sounds the best). Any information would help and I would like to know the blow off valves that don't lose boost at really high psi's. Thanks a lot,
Craig
Craig
#3
Rotary Freak
The stock one is fast because the diaphram in it is light . The drawback is that it opens at 4in vacuum,so it is open when you are idleing .If you change the spring so it opens above idle vacuum then you will not be wasting that air going out of the valve at idle .The spring my mechanic uses opens at 17 in of vacuum . So it is closed at idle (with street port ) and opens at higher vacuum when you close the throttle at higher rpm .Why spend money if you do not need to .