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Originally Posted by sp00ln
Then that would be a problem at the wastegate itself.
I just dont see how an exhaust leak AFTER the turbo would effect boost like its doing in your case. Why dont you slap a boost controller on there?
If you take it to Lithia and they fix your leak, let me know. I'm interested if that will cure your boost problem.
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The wastegate is built into the turbo and controlled by the ECU. If the map on the ECU is tuned with an expected backpressure due the exhaust, and that changes, then there could potentially be boost control issues that have nothing to do w/ the wastegate and everything to do with the messed up exhaust after the turbo.
I don't slap a boost controller on my car because I'd rather not blow up another motor. I figure the ECU and EBC already built into the car were engineered far better than a spring and ball bearing. Though, if you'd like one, I've got a TurboXS MBC sitting in a drawer in my garage.
Lithia won't ever touch my car. Not just because they wouldn't have a clue what to do after popping the hood, but because I barely trust professional race car builders w/ it, let alone some yahoo techs. The only reason I'd go to Lithia is to buy a new gasket that I'd install myself, in my garage... it takes like 10 minutes.