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Thread: Sanity check....2005 GTO, tvs2300, e85, and meth

  1. #1
    Advanced Tuner angrygoat's Avatar
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    Sanity check....2005 GTO, tvs2300, e85, and meth

    I would like someone to do a sanity check for me on what I have so far.

    Specs:
    2005 GTO M6
    364 ci
    tvs2300 @ 8-9psi
    TFS 225 heads
    110 lbs/hr injectors
    Full exhaust
    Snow Meth stage 1
    LC-1

    50% scale tune

    This is my first attempt at a boosted combo with the not so typical fuels. My first concern is getting the AFR right. Im not sure what it should be or even if the meth is needed. I would like to take it off just for simplistic purposes but the owner wants to keep it. What I have done to get at the current AFR is I have turned the meth off, tuned to a .81 lambda, and then turned the meth back on and let the AFR just fall where it may for the moment. Its appears to only get about 10% richer once the meth is back on. The owner only wants the meth as insurance. Is it ok to leave it as is?

    Any other tips or advice on the rest of the tune is welcomed......

    Thanks in advance
    Joe
    2006 M6 GTO
    APS TT
    10.76@131

    "The goal of tuning is for the tune to run well enough you dont need any corrective mechanisms"

  2. #2
    Senior Tuner IDRIVEAG8GT's Avatar
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    Just run it with the meth from 11.5-11.8 AFR . You'll make tons of power and keep those pesky IAT's in check. After that, pour the timing to it, and try not to break your dyno. Meth is a GOOD thing
    Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.

    PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.

    Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
    618/618 motor
    906/862 spray

    Caterpillar 50 Forklift- Duramax swap

  3. #3
    Advanced Tuner angrygoat's Avatar
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    I assume you mean on the gauge as just the stoich alone for ethanol is 9.77
    Joe
    2006 M6 GTO
    APS TT
    10.76@131

    "The goal of tuning is for the tune to run well enough you dont need any corrective mechanisms"

  4. #4
    Senior Tuner IDRIVEAG8GT's Avatar
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    I'm talking WOT, in boost, with the meth on, look for mid to high 11's on your Wideband. That's where all my Methanol injected stuff makes the most power.
    Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.

    PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.

    Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
    618/618 motor
    906/862 spray

    Caterpillar 50 Forklift- Duramax swap

  5. #5
    Senior Tuner Iam Broke's Avatar
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    Translates to a PE lambda of .78 - .80, or a PE ratio of 1.28 to 1.25

    The OP's PE seems a bit rich if the meth is adding 10% fuel.
    Last edited by Iam Broke; 09-03-2012 at 01:19 PM.
    '12 Camaro T3 2SS/RS LS3 M6, SLP TVS 2300, Flex Fuel