25-11-2012, 11:18 AM
A few months back I replaced the manifold gasket on my engine, whilst I had the manifold and turbo off I decided that I would wind the wastegate down to stop myself from being tempted to turn the boost up until I got a controller. Now when the boost gets to a certain level, there is a screetching noise which I am presuming is the wastegate letting off the extra pressure. Or is it a boost leak? I have never had a boost leak that sounds that loud before so I am hoping it is just the effect of the wastegate but I've renewed the intercooler seal just to be sure, it's still doing it.