Sounds like a boost leak to me..
Have you seen any oil or discolored smoke?Wingless said:I am having some serious boodt problems with my stock TT. From a roll, anywhere between 40 and 80, if I floor the throttle I don't get any boost (2-3 psi) but, if I give it 1/4 to 1/2 throttle I boosting at about 8-9 psi. Off of the line it does great until abou 4-5 K rpm in 3rd and then boost falls off again. Also I never boost above 9 psi.
Anybody have any ideas what the problem might be? Wastegate? Failed 2nd turbo? I have no top end and it really sucks.
Thanks man!Lonestar Dawg said:It's the rear one.
I had a similar situation late last year and it turned out to be a small vacuum hose to one of the turbo VSV's that popped off. It was located at the front of the engine just above and to the left of the water pump as you stand in front of the car facing the engine. Your problem is probably not the turbo but one of the small vacuum hoses. Hope this helps.