I have no problem spiking 25psi on the bigger hahn wastegate(with tru-boost), problem is holding boost till redline .. No matter what I do it still drops down to 21-22. This making top end tuning impossible (no port fueler).I'm begining to think it's the wastegate thats plaguing all of us. That agp wastegate mod is looking better to me everyday. Anyone have a hahn wastegate that actually spikes and maintains the same psi till redline?
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