Need help, lean problem

Predator support for GM gas vehicles

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06MonteSS
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Post by 06MonteSS »

jimmybuckets wrote:They say you should be around 13.1 at peak tq and around 12.5-12.7 at peak hp...I had numbers in the 13's and kicked it down a notch because I'm not using a wide band only the predator...so now my afr peaks at around 12.8 and flattens out to around 12.6...that is about as lean as i'm willing to go.
x2...
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DOA
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Post by DOA »

Yeah, I should probably Richin a bit. Which Vechile are you running with, Jimmy?
jsk06c6
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Re: RE: Need help, lean problem

Post by jsk06c6 »

06MonteSS wrote:what's dangerous?? his AFR is 11.94 to 12.7... nothing dangerous there... you can disregard the first 13.93 figure, because that's from his tip-in when he first went to 100% throttle... O2's were changing and the AFR was on it's way down from 14.75... normal...
He has some 12.8's in there, and thats a bit lean for a "guess" by the car's 02 sensors for me, but that's me, don't want to blow the motor in a 50k car.
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06MonteSS
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RE: Re: RE: Need help, lean problem

Post by 06MonteSS »

he's got 0 KR though, so he's doin ok...
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2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
jsk06c6
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Re: RE: Re: RE: Need help, lean problem

Post by jsk06c6 »

06MonteSS wrote:he's got 0 KR though, so he's doin ok...
Why would that matter? I have some KR and and I'm still rich, haven't touched the PE tables yet. Didn't think they were related lean/KR. Please explain.
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06MonteSS
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RE: Re: RE: Re: RE: Need help, lean problem

Post by 06MonteSS »

if he was too lean at WOT, he would have a bunch of KR, cuz not enough fuel.... at the other end of the spectrum, you will also get KR if you're too rich.

what are your latest numbers at for ltft's and the WOT AFR ???
06MonteSS / DiabLew Tune
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2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
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