SSQV BOV help

[chengsta]

I installed a SSQV BOV w/ recirculation kit in my 1990 eagle talon tsi 5spd and took it for a drive but for some reason at full boost it would spike at 15psi then drop right back down to 10psi (I have my MBC set to 15psi). Anyone have an idea of why it does that? I think it has something to do with the SSQV but not sure.

[SuperSleeper]

Is your boost controller hooked up properly?

[chengsta]

Yes I have my MBC installed correct. I ran 15psi with my 1g BOV just fine.

[JET]

It is probably the vacuum line to the BOV. Make sure that is hooked up correctly. I am willing to be that you did not zip-tie the connections of the hose. They are probably blowing open, which will release the BOV and you lose your boost.

[dsm95gsxer]

If it is similar to other aftermarket bovs you should be able to adjust how responsive the bov will be, wether it be by adding washers or turning an adjustment screw.

[SuperSleeper]

Yes, the SSQV has an adjustment bolt... impossible to miss.

[chengsta]

Re-checking my vacuum line(s) for leaks might be a good idea. From what I read about the adjusting screw on the SSQV, all it does is adjusts the sound but don't quote me on that. That's justs what I found out on it.

[JET]

Yep, don't listen to them. The HKS is of a different design than most BOV's. Don't mess with the screw.

[chengsta]

Just checked my lines while at idle and no vacuum leak seem to be present. I would free rev the car and see if any air leaks at higher rpms but can't do that or else my neighbors gonna call the cops on me hehehe. Sucks living in a neighborhood sometimes :P.

[JET]

You won't have a vacuum leak, just boost leaks. Trust me, if those lines aren't zip-tied, they will leak. I have an HKS also and we forgot to put one on once, it does exactly what you are talking about.