Caitlmt said:How do I adjust the fuel pressure regulator??? Is it a aftermarket part??
What mods have you done to the car? If you've upgraded injectors, I'd recommend going back to stock.Caitlmt said:My car is runnin extremely rich. My gas mileage is terrible. My horsepower seems really low for the mods I have. My air/fuel ratio is 11.2....
Please help.
HISSIN50 said:FWIW, the injectors will adapt the pulsewidth to reach stoich, or what the puter thinks is stoich.
That was why it was asked when this occurs. If it is at anything but WOT, the AFPR is not going to do much.
If we knew what mods he has (if anything significant), when it ran rich, etc, that would make this easier. I assume he has no mods other than bolt-ons and is not tossing any codes (you would see the adaptive limit, which is not as small as some might think, in a code).OrLackThereof said:That's true but there's a limit to its adaptiveness and it doesnt take very much to hit that limit.. You can drastically affect driveability both part throttle and full throttle with fuel pressure changes.
If you are going to turn off the EGR function in the puter, go for it.Caitlmt said:I just orderd the egr eliminator. Anyone have any comments on the eliminator???
HISSIN50 said:If we knew what mods he has (if anything significant), when it ran rich, etc, that would make this easier. I assume he has no mods other than bolt-ons and is not tossing any codes (you would see the adaptive limit, which is not as small as some might think, in a code).
Were you able to permanently change the part throttle trim with the AFPR? I am with you on the full throttle reasoning (on foxes, not SN95's).
There is no trim adaptation at WOT - it uses tables.OrLackThereof said:Im just going on my personal experience, running 24 lb injectors and an AFPR, as far as driveability goes, I found virtually no adaptation taking place on my car other than wide open...if the pressure is high, it surges, always, every time, and always stinks rich and fouls plugs. If it's lean, it misses and bucks, always, and never seems to adapt or add more fuel. I don't know if its just my car, but I've had to dial in my pressure to within 1 to 2 psi to get the car to act properly, so far as Ive been able to tell there's no adaptation taking place EXCEPT the computer's learning at wide open throttle, where it always backfires on shifts after changing something during the first pull. Maybe my car's just possessed, couldn't tell you
HISSIN50 said:There is no trim adaptation at WOT - it uses tables.
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