need some feedback

[redrockergsx]

Im running a garret 50 trim with 720 injectors and i cant get it to run good at 15 psi at 12psi i can get great runs on it but at 15psi i cant get it to run at 5500 rpm i have it a 15 or 18 % plus correction and i not sure if thats to much fuel cause my air/fuel ration gauged is not pegging out but i know i need a wideband and working on getting one but should i give more or less fuel if you cant help i just have to get a data logger and tune it that way

 

[Gasolinebaptism]

what fuel pump?

 

[redrockergsx]

255 walbro

 

[Gasolinebaptism]

I don't see why you can't turn it up to 18PSI or so, maybe 20. Have you tried that?
It sounds like it's running rich to me, but, I'm not there and couldn't tell you.
Do you have any tuning software? Link?

 

[LiquidX]

The narrowband won't tell you anything on how lean or rich you are running. You need a logger and wideband minimum. What are you currently using to adjust your trims?

 

[redrockergsx]

i using a air fuel ratio gauge apexi safc I buying a data logger but just trying to self tuning it to just get it to run at that psi I can usually get it to run fine by self tuning then tune it in with a data logger but i sold all my dsm stuff when i got rid of my last 90 talon

I running 12 psi and it runs great has lots of power. but when i turn it up to 15 psi just to do it slowly cause with out a data logger i dont wont to try for anything higher just to protect this engine and head this is a good high 11 to low 12 sec GSX. but when i do 15 psi it seems to miss fire or may be fuel cut at 4000 or 4500 rpm at 70% to 80% throttle and i have it at plus 10 to 15 % correction with a safc. I hope this is good info. I waiting till next year to go with a emanage so this what i have for know next buy is a wideband and a data logger