After a header swap. When at closed throttle and you tip in the fueling is correct. When the throttle steadies the afr will go lean in the 16s for 5-10 sec and then back to where is should be. This is in open loop also any ideas I am stumped? I have messed with the accel enrichment tables with no luck.
This only happens on low part throttle. Hard accel is fine.
89 mustang on e85 with a9l computer. R block 347 9. to 1,procharger D1 3 core intercooler 11 psi@6k, rhs 200, fti cam, holley systemax, Accufab mid lenghts, x with no cats, smog removed, 75 mm tb, pms 3in blowthru maf, 120 lbs injectors, lentech AOD, non lock up 3000 stall, 3.55 gear, ram charger fan, 130 amp alt, duel feed walbro 255 fuel system. I am using BE and EA
Last edited by mat50ho on Mon Apr 30, 2012 6:25 am, edited 1 time in total.