fuel pressure on stock lt1
#1
fuel pressure on stock lt1
what is the best fuel psi on a bolt on lt1? i've seen things on how stock is best, and others who have lowered the psi to like 36 and got 13rwhp out of it. need some more info. thanx???
#2
Re: fuel pressure on stock lt1
The important number is the A/F. I believe that you might experience a litttle leaner condition (factory is quite rich) when you first reduce the FP; but the OBD11 system compensates for the leaner condition by reducing the injector pulse time. Net result: you are back where you started.
Probably best to leave the FP alone and have your PCM programmed for a leaner mixfture. jmho
Probably best to leave the FP alone and have your PCM programmed for a leaner mixfture. jmho
#3
Re: fuel pressure on stock lt1
Originally Posted by BUBBA
The important number is the A/F. I believe that you might experience a litttle leaner condition (factory is quite rich) when you first reduce the FP; but the OBD11 system compensates for the leaner condition by reducing the injector pulse time. Net result: you are back where you started.
Probably best to leave the FP alone and have your PCM programmed for a leaner mixfture. jmho
Probably best to leave the FP alone and have your PCM programmed for a leaner mixfture. jmho
Leave the pressure stock, and have the PCM's power enrichment (PE) mode target A/F ratios reprogrammed leaner by one of the mail order tuners..... guaranteed 15HP power increase.
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