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Old 11-11-2010   #22
mlomker
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Join Date: Aug 2009
Location: Heaven
Drives: 94 Plymouth Acclaim/2008 EvoX
Posts: 2,430
Re: Fuel Pump Upgrade

Quote:
Originally Posted by Alpha D View Post
It does that would mean. . .for the guys at 30psi plus there FP goes up to upwards up 70PSI?
Right. My car typically idles at 43-44psi and I'm running 25psi of boost so it goes to 68-69 under boost.

The number to be concerned about when it comes to fuel pumps is whether it can deliver the lph/gph at full boost that the motor needs. If a fuel pump doesn't have enough flow at that psi then the psi will drop.

It was exactly that issue that I spent a lot of time troubleshooting this year...looks like it may have been a new fuel pump that was defective. That was the last thing I suspected, of course. lol.
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