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Ahhh ok

I literally was thinking that also. My gt only gets to like 42 with an 18 manifold. Stock tune also showed 60 on the log. I don't think .76 is commanded though and the stft are .88 and long is .95.. why would it be pulling 17% if it's commanded

No it's literally a stock mach1 with high flow cats lol nothing fancy.

Just a little update. Tossed the stock tune back in and it's a perfect .84 dropping to .82 at the very top end. Did two wot pulls in a row and the lamda remained the same. If it is some kinda protection kicking in they must of lowered the thresholds way lower then stock.

I would have to datalog fuel source to know for sure. Odd though that is would be in some sort of protection basically all the time. It's not like I'm beating on the car then dataloging. My point is literally the first wot hit after warming up is still rich as hell. Can't see any of the...

Lambse which I believe is commanded is .82.. so yeah something is causing it to go rich. Stft was .87 so it's trying to lean it out. Log sent to tuner. We shall see

I get that. But logged with inferred cat temp at 1100 and still went rite to .76. seems like as soon as it hits 6k it drops from .82 to .76. Would the stft still pull 18% during cot? Genuine question.

Damn ok thank you. Yeah I'm way richer. I did remove the carbon trap in the stock mach1/350 cai which the tuner knows about. I would think if anything that would of leaned it out though. I'm gonna do a complete datalog again and send it in. Has o2 spacers. Trims at idle are perfect. Mass...

Ok so thats ok then. I just gotta figure out the fat lamda then

I was thinking that but can't get a datalog without it. I guess it kicks in every time I go wot? Even the first wot does that. Thank you though I feel a little better

Just got tuned .Mach1 stock w/high flow cats. Seems rich past 6k. I would think .76 lamda for n/a is kinda fat no? I'm not an expert and definitely not claiming to be just would like an opinion before I ask the tuner to look at it again. I've read coyotes like fuel but how much I don't know

It's from a charcoal filter that they placed in the intake by the maf. Comes rite out. Watch Tony's mach 1 on YouTube he explains it.