When im into it about 40-50% throttle my turbo will spool but for about 2 second it makes a kind of noise then it goes away and will spool normal. I had my friend look at it and he believes its waste gate crack. Im running the stock vf39 turbo with 78,000 miles on it. So is waste gate crack a big problem?
Nope. It's probably your wastegate fluttering. I have this on my car, it's more of an annoyance than it is a problem.
Does it sound like a helicopter going tsk tsk tsk tsk tsk?
oh okay i hear about wastegate flutter but is wastegate flutter a serious problem? i haven't experience any problems with it and im still making full boost like normal.