fuel problem
i have a 50trim with rc750cc walbro 255lph and a fuel pump rewire
when i do a pull at 21 psi i have a lean spike between 5500 and 6250rpm
but from 3500 to 5500 its at 11.1 af and after 6250 to 6500 its at 11.3
i made a log and my injector are at 20ms or 80% duty cycle when i wot
but if my boost is only 18 psi i dont get the lean spike
and i have a sct prp so my af ratio should be at 11.4 normaly
anyone have a idea why i have this lean spike
i have a agp return line that i want to install in the next week but i dont know if my problem will go away with it
Last edited by speedup : 09-18-2009 at 10:18 PM.
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