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I've always seemed to have a problem with my boost and setting it to a lower amont. I just installed a FP 17psi actuator on my T28 and now its boosting more than what pump gas can handle and producing knock. I've tried just about everything I can think of to get the manual boost controller to drop down the psi however, nothing seems to work. Even putting a spring on the wastegate to hold it up still creates 20+ psi. Right now I'm driving it with a vaccum line between the turbo and the wastegate canister and still pulling 23psi of boost.
Would porting the wastegate around the puck help? Or would you think it is somthing else? Any help would be greatly appreciated.
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