maft tunning got me all screwed up...
05-07-2002, 12:26 AM
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maft tunning got me all screwed up... ok...all components are stock 2001 parts.
my ltrms at cruise(70ish) are -.8 to -3.9.
at lower around town speeds and gear changes its higher at -3.4ish to -7.4ish. how ever my WOT o2s are anywhere between .905 to .945 and right befor i reach WOT my ltrms go to a low positive number(.o8) then to zero, i cant get my o2s any lower no matter what i do. and i dont like being that rich driving around town. im by no means an expert in this and ive done a serach and every solution or advise i have done or tired,maybe im doing it wrong or somthing is mess up but im out <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" /> <img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" /> of ideas. please offer some input here.
my ltrms at cruise(70ish) are -.8 to -3.9.
at lower around town speeds and gear changes its higher at -3.4ish to -7.4ish. how ever my WOT o2s are anywhere between .905 to .945 and right befor i reach WOT my ltrms go to a low positive number(.o8) then to zero, i cant get my o2s any lower no matter what i do. and i dont like being that rich driving around town. im by no means an expert in this and ive done a serach and every solution or advise i have done or tired,maybe im doing it wrong or somthing is mess up but im out <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" /> <img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" /> of ideas. please offer some input here.
05-07-2002, 07:52 AM
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Re: maft tunning got me all screwed up... Your Ltrims are excellent, you want them to be a small negative %. During PE mode, the PCM will not add in any extra fuel due to the Ltrim value if it is negative.
Running at WOT (PE mode), 905 to 940mV from the O2s may be just right. The O2 sensors are not well calibrated. When my O2s put out 960 to 970mV, I'm at 13.3:1 AFR according to dyno testing with a good AFR meter.
Running at WOT (PE mode), 905 to 940mV from the O2s may be just right. The O2 sensors are not well calibrated. When my O2s put out 960 to 970mV, I'm at 13.3:1 AFR according to dyno testing with a good AFR meter.
05-07-2002, 11:06 AM
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Re: maft tunning got me all screwed up... well during all this my afr is like 11.7 with. should i just disregard the atap 02 and afr data cuz it doesnt seem consistant.