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Old 07-16-2008, 12:07 PM   #2
Scooby Guru
Member#: 120152
Join Date: Jul 2006
Chapter/Region: MWSOC
Location: Indy

Sounds like your FPR is stuck in a closed position and not allowing pressure to bleed off. When you hit WOT and the boost increased fuel pressure it might have jammed it beyond the limits of the FPR or just gotten an 0-ring or piston stuck. The flow from dual walbros may outflow the limits of the stock FPR, though I'm not positive.
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