i installed a 255lph fuel pump and a kirban regulator last week and i am curious as to what i should set the fuel pressure at? i have a gauge hooked to the schrader valve on the fuel line, and with the vaccum off the regulator i have it set at about 47psi. i know that is rich, but i wanted to be careful. i'm running a stock bottom end, stock heads, stock cam, 1.7 rocker arms, performer 5.0 intake, 73 maf, 65 tb, 24lb injectors, and a 9psi powerdyne supercharger. i also only run 93 octane gas in the car, nothing below, and i haven't ever bought 100 or better either, only 93.
what fuel pressure should i run?
- Thread starter grey302
- Start date
Fox Saleen 163
New Member
If you were N/A I would take a guess. Since you have a power adder, I say go get it dynoed. Right now you are safe with the fuel pressure, don't take any chances.
thanks fox, i gotta do something tho and i'm outta money. i was comming home from a club tonight and running it up in the rpms, (few drinks in me) and it feels like i'm flooding the car at wot. only does it feel like this though when i have the pedal matted. i know i have to back it down some, but i don't know how far to go
thanks,
Cole
thanks,
Cole
Cole,
When I started Tweecing my 90GT with a new NA 306 with 24# injectors and C&L 73mm MAF with 24# tube. I datalogged and found that with the stock PCM settings that 37# FP was perfect. After setting the injector slopes and etc. in the PCM 39# FP was perfect.
So with a SC you should be running an FMU with a stock PCM so 37# would be a good place to start.
Good Luck, Don
When I started Tweecing my 90GT with a new NA 306 with 24# injectors and C&L 73mm MAF with 24# tube. I datalogged and found that with the stock PCM settings that 37# FP was perfect. After setting the injector slopes and etc. in the PCM 39# FP was perfect.
So with a SC you should be running an FMU with a stock PCM so 37# would be a good place to start.
Good Luck, Don
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