FPR with 450's

[Larry L]

Can I turn my fuel up on 450s with the FPR and if so how much?

 

[Tyler_Baker]

Originally posted by Larry L
Can I turn my fuel up on 450s with the FPR and if so how much?

Why would you want to turn up your FP? Keep it at 43.5psi, according to your profile you have no way to see if you need more fuel or not. What instruments are you using to tune your car?(IE: Dsmlink, Wideband, EGT, etc..) Your question is too vague to yield an accurate answer.

 

[Vegas Smith]

Of course you can tune with that stuff. I have no problems with fuel and look at my entire setup, still on 450's!!!

 

[Larry L]

I dyno tune my car on a wide band. I know it is not reccomended but I also use my S-afc to watch O2 voltage. I've used it in conjunstion with the wide band and dyno tuning and it has been dead on all three times. I currently run 16psi and I am hella fat. If I lean it our to -9% across the board to -7 at redline, then I have and my A/F ratio around 12. I wanna turn my boost up to 18, Thus I need to know if I can use an FPR temorarily to get it done. Of course
i'll do this on a Dyno and wide band...Thanks

 

[kpt4321]

If it only takes 7% correction to get to 12:1, then you are not "hella fat."

Since you have a SAFC, yes you can turn the fuel pressure up. I would keep the base pressure below 50 psi.

 

[TSi92]

There was a FWD laser that ran low 12's on stock in-tank pump, 14b, and stock injectors. It had a in-line pump though.

 

[Vegas Smith]

Originally posted by TSi92
There was a FWD laser that ran low 12's on stock in-tank pump, 14b, and stock injectors. It had a in-line pump though.

Yeah, its called slicks, racegas and gutted so bad if a bug hit the door it would dent. Doesnt really have a whole lot to do with the subject.

 

[Larry L]

Originally posted by kpt4321
If it only takes 7% correction to get to 12:1, then you are not "hella fat."

Since you have a SAFC, yes you can turn the fuel pressure up. I would keep the base pressure below 50 psi.

Initial dyno had my air fuel off the charts fat... And even though it wasn't "HELLA FAT." It shows that I have room either to lean out the mixture or turn up the boost. But I wanna be sure I have some way to play with the fuel and not hit fuel cut.. "I know just get injectors." Can't afford it yet, Thats why I wanna turn up my FPR... Thanks for the reply.. I'll keep the pressure under 50 pounds.