| with no vacuum signal. WITH a vacuum signal it should lower to around 33 psi. at WOT your near zero vacuum so it should raise back up to 43 psi. On a turbo'd car it should increase the fuel pressure as the boost pressure raises. IE 10 lbs of boost should bring it to 53 psi. 10 lbs of vacuum should reduce it to 33 psi. From what I understand anyways.... Did you monitor A/F's before the new sensors? any aftermarket ECU mods?
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