need help with powerdyne.
02-03-2006, 09:20 PM
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Join Date: Aug 2005
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need help with powerdyne. I have had a 6psi supercharger on my 2002 gmc sierra for a while and i just bought a 10psi pully. I installed it and i still dont boost over 6 psi. will i have to purchase a new bypass valve, or is there a way to modify the one i have. I think that is my problem. Just wondering if anyone has any ideas.
