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Fuel Pressure Regulator question

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secondchance

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I understand that disconnecting and plugging the FPRegulator increases the pressure by 4-5 psi. Is there any benefit to doing this? Any harmful effect, say to fuel injector spring, due to higher psi?
 
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I can't answer on behalf of a ZR1 owner, but assuming things are similar to LT1/4 cars I can tell you that the computer wants a balanced engine. If you increase your fuel pressure too much, it will compensate by shortening the pulse of the injectors... this leads to a bad spray, and less HP. The only way to increase fuel pressure is by testing the air/fuel ratio. PSI of the system really means nothing.
 
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secondchance

Guest
Hmmm, Makes sense. Only thing is ECM could compensate within the parameter. Sometimes, certain things you do, although ECM tries to compensate, could be achieved.
 
Joined
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Messages
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I feel like half the time the ECM is my friend, and the other half I am at war with it! LOL... I have just seen too many people put adjustable fuel pressure regulators on LT1/4 cars and lose power... they will just crank it up a few PSI, using a fuel pressure gauge instead of using air/fuel ratio... these guys are usually really confused as to why they lost power.:crazy
 

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