I know people had stuff on this before but i was just woundering if anybody had this problem. I have a HKS BOV. I think the Bov is messed up because it is sputter the whole time. I tighten all bolts. I don't think it is the turbo it might be i don't know though. It isnn't holding boost when u get on it. It starts to go down. Valcum is at like 11 or 12 psi.
Check the small return line and make sure its in there in both sides; the manifold nipple and the line from the BOV. If that still doesnt do it, then you might need a new C-Ring for the the BOV. Its like 20 bux from HKS.
i am pretty sure now it is the BOV. Put the stock one back on and know sputter. Only had the HKS bov for like 8000 miles. It lets out the air when i gun it and let boost peak and let the gas go fast. it blows off. If anybody knows the proble please replile.