When trying to adjust fuel pressure with FMU hooked up pressure will not fall under 58# at idle. When bypassing FMU pressure can be adjusted normally. Is the FMU faulty?
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When trying to adjust fuel pressure with FMU hooked up pressure will not fall under 58# at idle. When bypassing FMU pressure can be adjusted normally. Is the FMU faulty?
It sounds like it :confused: The FMU shouldn't affect FP unless you are under boost.
Actually there was no calibration kit in the FMU. I ordered a new 6to1 kit and that solved the problem. Thanks anyways 92 STANG LX