Rich spike at 4k rpms
I recently had headers installed along with a wideband. In the past couple of weeks i have noticed as i roll on the throttle i get a 10.(0-9) on the wideband. it has been tuned with a safcII and had a little wave from leaner to richer before and after 4k respectivly. when i started to see the spike i dropped my RRFPR down 2 psi but not much changed. I have felt it studer when i see the 10. so i know its not the wideband. it has seemed to get better since i set the safc back to the origional tune. i am now keeping an eye on it per IPS but thought i would give u all a shot at some imput also.
Clay
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01 Montero Sport 3.5XS.Mods from first to last.... Magnaflow exhaust, Spectra intake tube w/K&N and fabbed scoop. RPW 5mm TB bore. Main cat removed. RPW LT headers & stage 1 cams on Fidanza Eclipse V6 GT gears. FSE rising rate fuel press regulator set at 33. MAS screw backed out flush. APEXi SAFCII.JET ECU Reprogram. Haydens HD tranny cooler. IPT shift kit. Magnecore 8mm wires. NKG Coppers at .024. NX Wet Kit w/100 shot.Porterfield C/D Rotors & R4S Pads. 4660lbs & mid 15's at the track
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