Thread: Highway Pull Wideband Pegged Rich.

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  1. #1 Highway Pull Wideband Pegged Rich. 
    SE Level Member chrisrexmandie's Avatar
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    Last night I was doing a highway pull and I glanced at my wide band and it was pegged rich as far as it will read (10.0). I looked at my tune file and found this table that adds fuel the longer you stay in power enrichment. Should I make any changes to this? I can see how this can be used as a safety but I would also think it would hurt performance.

    https://i.imgur.com/gmd9IkC.png
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  2. #2 Re: Highway Pull Wideband Pegged Rich. 
    Donating Users bandook's Avatar
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    From my experience this table helps when you are doing multiple pulls back to back, because your afr will start to lean out as you get heat soaked. I have mine zeroed out, but it could help under certain circumstances. You'll just have to play with it and see how your car responds. But if you have a good tune and don't beat on your car my opinion is zero it out because you'll get better pulls when it's cooler. But make sure you scan if you make changes.
    Top Swapped 01 Imp
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  3. #3 Re: Highway Pull Wideband Pegged Rich. 
    Donating Users bandook's Avatar
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    Also, what is your commanded afr in PE? I can't read the picture you posted, all blurry.
    Top Swapped 01 Imp
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  4. #4 Re: Highway Pull Wideband Pegged Rich. 
    Killa Bee Scottydoggs's Avatar
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    you can zero out the time vs rpm file there but you'll likely need to maf tune it wot. best to scan afterwards and re tune the maf if needed. set the pe afr to 11.5

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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