Re: Boost fade
A T28 is more than capable of holding 18psi to 7000 RPM. Do you have a major restriction on your intake track? Really dirty air filter? Stock IC piping? Stock BOV? When doing the boost-leak test, how high have you tested it to?
BTW, unless you have a FMIC on your car you should not be running that much boost on pump gas, especially untuned. Do you have the fuel to support it (pump, injectors, etc.)?
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Originally Posted by Murlo26
I agree with Kracka.
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