1999ssls1

iTrader: (71)

I am running out of injector and cant figure out why. I am only at 600rwhp and 60lb Mototrons, Dual intank Walbro255s (wired together), return style fuel system with Boost Referenced Regulator. I am at 130% injector duty cycle at 6k rpms. AFR is 11.5 across the board. FP is 55psi Idle and around 70 WOT.

Thanks

edcmat-l1

iTrader: (10)

What's the A/F ratio? Are you sure you're not loosing fuel pressure? Do you have a gauge on it?

FICINJECTORS

iTrader: (30)

I agree, if your HP numbers are correct and everything is working as it should be, the 60's should be exactly what you need.

If everything is as it should be you should be seeing around an 85-90% duty cycle.

Maybe you have more power than you think.

Lonnies Performance

iTrader: (16)

If you were at 900hp, I would say you are out of injector.

What fuel pressure are you running & what is the max fuel pressure you are seeing & what is the max boost you achieve? Something is wrong.

Old Geezer

iTrader: (3)

as you posted in another forum??
Might get better, more feedback, if the details were all in 1 post??
https://ls1tech.com/forums/pcm-diagn...og-inside.html

1999ssls1

iTrader: (71)

AFR is a 11.5 across the board. It has boost referenced regulator on it and I watched my gauge when it was getting dynoed and it went to around 70psi. Never dropped though.

1999ssls1

iTrader: (71)

55psi Idle and around 70psi WOT. The car is only on 10psi of boost. Hasnt seen anymore than that.

1999ssls1

iTrader: (71)

I posted into the pcm forum, because I wanted my log and tune looked over to make sure they looked ok. I didnt want to post the tune and log over here in the fueling forum..