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Ok thanks, we cranked the fuel pressure up to 60 psi and ran it to try to force it to go rich. When we did that we didnt see the fuel pressure rise with boost--stayed about the same... shortly there after we burned up the fuel pump, which ended that game. I assumed it that it wasnt a valid test because the fuel pressure was so high. I will do a re-run of that test with fuel pressure set normal. Since we got second fuel pump in now with same symptoms, so not likely fuel pump. FPR could be problem. At idle we only getting drop from 44 to 41, when it should be down to 36-ish. We have dedicated line from the throttle body to FPR --which we have changed out and zipped tied down.
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