01a4 1.8t when I start to go sometimes only sometimes will I get full boost and rip thru 1-3 gear but the rest of the time half or less got motor rebuilt replaced all gaskets and hoses and vac lines. I didn't remember to get a boost gauge and ran out of money. But there is a noise that's got me baffled when I push on gas turbo spools u can hear the psshh when changing gears but it almost always it psssh's (DV) when I ride a gear and don't want to change gears or it pssh's right before I change gears too. Is the DV bad or is it my N75 or both please gimme y'alls opinion. Thanks




P.s bout forgot when I'm riding and I gas it to high rpm's it will psshh and like thump or pop sound?

 

sounds like a shot DV to me for sure. either that or a decent sized boost leak. I'd say the odds of it being one of those problems is about 99%

 

That's what I was think in just wanted to hear it from someone else i don't thinks its a leak cause I spayed like a whole can of brake and parts cleaner all over the engine where there a any hoses and vac line but no change in idle thanks if not DV any ideas?

 

spraying brake cleaner cut it. There may be no leak under vacuum, but boost could separate the hoses. you will need to do a boost leak test if you dv checks out ok.

 

OK thanks ill get back to you