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Thread: e85 cold start issues E40

  1. #1
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    e85 cold start issues E40

    Need Help e85 cold start
    doesn't get below 38 degrees lately runs really good after it starts but i have to crank it too many times to get it running after it starts the first time in the morning it starts right up after that all day.
    need some help.
    as soon as it starts my wideband goes to .62 within 5 seconds its at .80 as it warms up goes up to .98 its at1.22 cranking


    2006 GTO ls2 procharger 1000cc fic injectors kenne belle boostapump 425 lph walbro pump
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    Last edited by erichoshaw; 03-21-2023 at 07:01 PM.

  2. #2
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    my wideband numbers are wrong in my first thread. they are 1.22 cranking .62 startup and within 5 seconds go to .90 i can attach my startup log
    Last edited by erichoshaw; 03-21-2023 at 06:49 PM.

  3. #3
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    Only glanced at a couple of things - put your open loop tables back, your cranking fuel table back and then lower your crank timing while ramping up to higher timing with the rpms. See where you're at after that and go from there. I only looked at those. Didn't verify any inj or other tables.
    2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
    2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80

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  4. #4
    Tuning Addict blindsquirrel's Avatar
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    Returnless or boost referenced? What fuel pressure? FIClinic or FIConnection? Link to datasheet you used?

  5. #5
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    its return less
    Thanks CHuggins for looking

  6. #6
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    thats the way my open loop tables were before i started the flex tune .
    it had the procharger on it when i bought it and that tune it ran good on gas.
    i have an OEM 2006 gto file i can copy the open loop from

  7. #7
    Tuning Addict blindsquirrel's Avatar
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    Quote Originally Posted by blindsquirrel View Post
    Returnless or boost referenced?

    Quote Originally Posted by erichoshaw View Post
    its return less
    Quote Originally Posted by blindsquirrel View Post
    What fuel pressure?
    Quote Originally Posted by blindsquirrel View Post
    FIClinic or FIConnection?
    Quote Originally Posted by blindsquirrel View Post
    Link to datasheet you used?
    Short Pulse Adder table is still stock, that one got skipped. Don't know what it should be because it's still 50/50 which of the two companies' injectors you have.

    [ECM] 12560 - IVT Weighting Coefficient looks weird - that should be 1/2 of stock, and then also not one single value all the way across since you've done flex fuel.

    The non-scaled version should be 7.921875 8.3828125 8.84375 10.2265625 11.609375. 1/2 that would be 3.9609375 4.19140625 4.421875 5.11328125 5.8046875.

  8. #8
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    returnless fi clinic 58lbs

  9. #9
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    when i had their short pulse adder in it it wouldnt even idle at all it would start but was way rich and died at idle.
    it had bosch blue injectors before so is all my scaling off now when i installed these because i didnt use stock tables

  10. #10
    Tuning Addict blindsquirrel's Avatar
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    So... your plan is to leave it scaled wrong so that it runs better with the wrong injector data?

    Best of luck. I'm out.

  11. #11
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    i will change those things and test it tomorrow
    Thank You for the help

  12. #12
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    all my open loop tables are set at 10.0 ist that wrong too?
    i will test it tomorrow and get back and post the log and file

  13. #13
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    e85 cold start issues

    i changed the short pulse adder and the IVT values
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  14. #14
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    Don't forget to set the cranking fuel table back to stock.

  15. #15
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    e85-cold-start-issues-E40

    started great first crank
    here is the log and file

    thanks sooo much

    i have been tuning old school (no ecu) for 40+ years this is a learning curve but i love learning i really appreciate you guys taking the time to help i will keep posting
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