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Thread: Power enrichment and meth, i need it leaner but its not letting me

  1. #1
    Advanced Tuner
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    Jul 2021
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    234

    Power enrichment and meth, i need it leaner but its not letting me

    2015 z06

    How I am tuning the meth is with power enrichment. I prefer to do it that way. I recently made some changes to how the meth gets delivered and got rid of the solenoid and opted for a window switch since with boost it was just never quick enough. Now though its very rich, about .7 lambda which is great now I have a lot of fuel but the eq commanded by the car isnt reflecting what i'm telling it to do under power enrichment gas and alcohol (i run e too). There seems to be a hard limit somewhere that it will not let eq go leaner than 1.0. I need to remove that. yes i know, dangerous stuff. I've tried lowering minimum eq for knock enrichment and cot (even though its not on). Do I have to play around with the open/loop tables? I do realize I could just take some out of the MAF but I would have to take out a lot and the tq tables might not agree with it.

  2. #2
    Advanced Tuner
    Join Date
    Aug 2006
    Location
    Arizona
    Posts
    263
    Messing with the MAF will then affect the torque model. Why not just go to a smaller nozzle?
    2009.5 PBM G8 GXP M6 W/Roof-Self tune, OBX LTs, Kooks axleback, LSA blower, cam,
    Monster LT1-SC clutch, flex fuel, 12 psi [email protected] 1,800 D.A
    2007 TBSS-Self tune, bolt ons [email protected], 1,900 D.A
    1991 GMC Syclone- Self tune/catback 12.8@104, 4,200ft D.A

  3. #3
    Advanced Tuner
    Join Date
    Jul 2021
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    234
    I need the meth more down low than up top.