running a greddy type-s. Getting sum compressor surge lately. running a pt67 at 11 psi. tightened it down and sounded like it was not opening loosened it off and it is barely audible. Any ideas?

 

Sounds like you need a better vacuum source. Try a thicker vacuum hose to the BOV. This happened to me and I though the spring was too strong for the boost I was running and I ended up cutting it to the point where at idle it would stay open and it would still surge every time I let go of the pedal because the problem was that the vacuum hose I was using was too thin and it took too long for it to transfer that vacuum to the BOV, it would open but after surge had already occurred.

You could also have a broken diaphragm. Check the hose first. Was it working w this hose before or is it a new install?

Chirs

 

Yea it was working before just fine......i will try a new vaccum line and source.

 

If it was working fine before as it was you probably have a small tear in the diaphragm. I would remove the BOV and disassemble it to see if thats the problem.

Good luck!

Chris

 

I have decided to do it. Look into buying a new bov ne way. Probally a hks ssqv.