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Thread: Very lean on E85

  1. #1
    Tuner in Training
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    Jan 2022
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    Very lean on E85

    I've been battling my 2012 C6 over the last couple of days. Car was MAF only and had drivability issues. It was also running E so I know the car should run on it again. I went to a 2bar OS and was finally able to get my VE table pretty well dialed in. I still have a slight buck at low RPM (thanks to those who helped with that) but I think its about as good as its going to get. I still have 55 gallons of E85 left over from a car I no longer have so I figured it may be a good time to tune this car for E85 since it already has the fuel system for it. I'm running Fore triples and ID1300 injectors. I thought I had everything enabled that needed to be. During the first startup the STFT are 25%'ish lean. The log shows the E content is about 50% but the car is acting like its not recognizing the E content. I upped the PE EQ alcohol ratio by 20% just to see if I got a response and I did not. Do you guys have any idea what may be the issue?

    E85 startup.hpl C6 Tune 57 Custom OS E85.hpt
    Last edited by ta406; 21 Hours Ago at 08:30 PM.

  2. #2
    Senior Tuner dhoagland's Avatar
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    Jun 2015
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    Aubrey TX
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    Why is Stoich 28.

    stoich.jpg
    2011 Camaro 2SS Convertible L99 Bone Stock for now
    2003 Dodge 2500 5.9 Cummins QC 4x4. Airaid, 2nd Gen Intake, Grid Heater Delete, D-Tech 62/65/12, Magnaflow. Bully Dog: Propane Injection, Triple Dog W/Outlook Crazy Larry. Edge EZ, BD Flow-Max, 48RE: Sonnax Sure Cure/Transgo combination, Derale turbulator, billet input, Triple Disc, Super servo, 4 ring Accumulator. :beer

  3. #3
    Senior Tuner
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    Jan 2014
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    Australia
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    yea the flex sensor can only adjust when the stoich is correct, just go back to stock values and double them if ur doing the double stoich half IFR deal

  4. #4
    Tuner in Training
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    Jan 2022
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    Got it. Thanks guys. I really appreciate your help.