Fast XFI
07-08-2011, 10:22 PM
#1
Fast XFI
Not sure if this is the spot for these questions, but the fuel system is on a SBC so technically its still GM tuning lol. Friend of mine has a custom rock crawler jeep with a 350 in it with this XFI system, and I can't get it to go into closed loop. It seems to randomly turn on STFTs and keep fueling in check, but then they somehow turn off and AFR swings lean. I don't want to run OL since it has CLSD capability. Anybody know what might hinder closed loop?
07-09-2011, 09:04 PM
#2
Turned out to be a fuel system issue, either a bad pump or regulator. It is having intermittent pressure drops, hard to catch. Going to replace the pump first to see if it fixes the problem. I've been feeling retarded about this for no reason it seems lol.
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