Possible boost leak from BOV, tunning tips?

[JDMSIL80]

I was running full boost around 11psi and from 4000 onwards, there is some flapping/clinking noises coming from the ARC BOV. So I thought maybe it was setup too loose from the beginning. I tried tightening up the tension and did a more few runs, didn't help too much in terms of the cut-off but actually got worse if I tightened it to the point where I cannot hear the blow-off sound anymore. My BOV is setup as venting open-air, not re-circulate, so I was wondering if it could possibly be a boost leak right there.

I find different loads of the BOV definitely affects the driveability of the car, can somebody give me some details in terms of BOV tunning?

Thanks!

[Nunook]

My type-s bov (atmosphere vented) suddenly started to release underthrottle. Is seems that my spring got week for some reason. I tightened it down all the way and almost solved the problem.

in ur case i would think its not the bov, cause u tightened it and that didn't help. I dont kno much about the arc though. goodluck.

[rexhunta]

Haven't had any problems with my ARC bov at all..

What vacuum are you using for the top ? The best vacuum fro BOVs that is easily accesible is the one that goes to the charcoal cannister at the front of the engine bay...

Pete