Author Topic: Fuel pressure??? (Read 2534 times)

kidnafarious · « **on:** December 23, 2009, 05:19:31 PM »

what should my fuel pressure be???
i think i need a fuel pressure regulator

is it worth getting an ajustable fpr???
if so, would there be any noticeable gains from upping the fuel pressure???

i dont kno if this matters but.... i did the mess under the intake mod, mustang injectors, throttle heater plate delete.... and it has a k&n cone filter with heatsheild...

thanks for any help/opinions

DesktopDave · « **Reply #1 on:** December 23, 2009, 07:09:29 PM »

Is it running badly? Low fuel mileage?

1991 E30 M42 · « **Reply #2 on:** December 23, 2009, 07:29:05 PM »

Your fuel pressure should be 3 bar which is about 43 psi, as for and adjustable I do not think you would see any gains on a stock engine or a stock ecu that has adaptive learning.

kidnafarious · « **Reply #3 on:** December 24, 2009, 03:55:02 PM »

its getting crappy fuel mileage....it also kinda stumbles under three thousand rpm...

thanks for the input guys... much appreciated