Red97Z

iTrader: (22)

Ok, when I got my car back from the shop, I noticed my idle was a little higher than usual, idles around 1000rpm now. I thought it was just because it was hot, which it tends to do, but now I hear a very low hiss from my bypass valve at all speeds, which leads me to believe I have a bypass valve leak/vacuum leak in my manifold. How can I pinpoint the leak? Am I loosing boost/power because of it?

EPP

iTrader: (22)

The bypass valve will bleed off boost unless you're at wide open throttle. Have you looked at it to see if the vaccum line is connected? Do you have a boost gauge? Bob