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Question about my fueling

shawnschuldt

shawnschuldt

New member
Okay i was doing some tuning and from 10125hz on up im leaning out to like 13.3. Long story short ive added almost 15% fuel in that range, and the air fuel hasnt came up. My question is, is this because i dont have enough fuel? I have 60# injectors on e85. My injector duty cycle is only peaking at 95% but can this still be a pump issue?

I bought a new pump and rewire this morning u think that could fix it. Whats your thoughts

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How's your fuel pressure? And I think you need an aftermarket pump instead of a stock one at that level of needing fuel. Also running E85 you will need something like 15% more fuel.
 
More like 30%, but that seems strange. my GT pump is holding me to like 70% max duty cycle on a 3.4, I have ZZP's rewire. But yea if youre adding fuel and its not changing then its probably getting maxed out.
 
Ok just wasnt sure because my duty cycle wasnt maxes out. I think i have a wiring problem or pump problem since i got the car i was maxing out stockers on a 3.4 with gasoline. Duty cycle was 100% then.
I know it was normal at idle last time i checked ill check again tonight. I cant check while driving becausr the pigtail on my guage aint long enough for me to see.

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oh i know im not maxing them out but when i had stock injectors on just gasoline and a 3.4 i was maxxing them out, thats kinda why i think ive always had a pump or wiring issue
 
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