Just installed, and sounds fine. But when I'm at WOT when I get above 10psi. It starts to sound like one of those whistle blower things. Almost like a reed(musicle instrument type). But only when I start to get above 10psi. Think maybe its leaking? I havent had a chance to do any real testing till tomorrow.
Cant say I've hit full boost yet, but again i have had limited testing