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Thread: Big turbo Fusion going lean for no reason?

  1. #1
    Potential Tuner
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    Dec 2019
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    Big turbo Fusion going lean for no reason?

    I have tried everything and its racking my brain.
    At this point im willing to pay someone to help.
    Setup is a 2.0 EB with a GTX2867R gen 2 on 0% wgdc 18psi
    Is running 1000cc single port of 100% methanol on a progressive controller.
    We are commanding 0.69-0.80 in wot enrichment
    For whatever reason in 4th in 5th gear the pcm will randomly target stoich 1.00 around 5,000rpm and then will stft out 28% fuel.
    Replaced hpfp and cam bucket 40k miles ago (frp is around 2200-3000psi), lpfp has 82k and is only commanding 35%dc, injectors probably need to be cleaned but ive also put in dw1700cc injectors had the same issues at wot(which had a bank 2 and bank 3 open circuit code so dw sent me a rma), both upper and lower fuel pressure sensors have been replace.
    I deleted the evap setup to have more room but left the purge valve to vent (not sure if that would be the problem)
    Also we are targeting 3.00 load but I don't think the car has seen over 2.55 load, still not sure if that would be the issue.
    Doesnt appear to be hitting any limits.
    When doing a read for codes it says fuel system incomplete.
    I will attach recent tune file and logs. (Some channels wont work if you arent using beta)
    If you help me figure it out pm me with your paypal address.
    Attached Files Attached Files
    Last edited by Tookoff; 01-18-2020 at 01:25 AM.

  2. #2
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    Feb 2016
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    Giessen Germany
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    Set [ECM] 44780 - Torque Limit Timer from 2sec to 255sec

  3. #3
    Advanced Tuner Witt's Avatar
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    Aug 2006
    Location
    Pittsburgh, PA
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    380
    Looks like Turbo FMEM causing it. I would review all your turbo limit parameters and go from there. Unless I missed it, I didn't see any airmass channels logged so I couldn't tell you exactly what it is.

  4. #4
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    Dec 2019
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    I have a bunch of logs without turbo fmem limit and it still does it.