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Thread: Stock truck worth tuning?

  1. #1
    Advanced Tuner domestic rice's Avatar
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    Stock truck worth tuning?

    My 07 Avalanche 5.3 with DOD and cat back only. Is it really worth me taking the time to learn this damm gen 4. The VE tables look like a PITA to do. The 99Z looks very simple compaired to this. And at least with the Z there is a plie of mods so tuning was a must and big hp maker.

    Guys with stock trucks, did you get much for MPG or performance? I am not talking about the neck snaps from jacking up the shift points and psi.
    99Z A4 w/ SS LT's, h/f cats, magnaflow catback, port/polish t/b, egr deleted, ls6 intake, lid, 3.73's, hpt, performabuilt level 1 tranny, 3600 stall, Stage 2.5 (5.3 heads), Torquer 2 cam, 42# reworked injectors, TR6 plugs.

    2007 Avalanche LTZ - Catback and Eibach springs

  2. #2
    Tuner in Training Longslyde's Avatar
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    When I tuned my 2010 in stock form, the difference was VERY noticeable. That was a 6.2L w/6L80E. Gained about 1-2 mpg hyw. I did tune the transmission right away too because of the crappy shift points from the factory. Definitely was more responsive and "felt" like another 20HP from "seat of the pants". YMMV.
    2010 GMC Sierra Crew Cab
    Forged LS7 427 Flex Fuel Tune
    Whipple Supercharger (15PSI)
    6L90E Transmission/CTSV Converter
    4.10 Gears

    Yes, it runs on E85 too and LOVES it! ;D

  3. #3
    Senior Tuner IDRIVEAG8GT's Avatar
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    Yep there's a gain to be had.
    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

  4. #4
    Tuner in Training
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    So when you guys ae tuning a truck what are you adjusting and are you guys using a wb for monitoring?

  5. #5
    Advanced Tuner Asylumwarp's Avatar
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    Maybe you should just data log it and see if its way off. If so its time for a tune. If not, why spend the credits.. BTW, hows the camaro running?

  6. #6
    Senior Tuner IDRIVEAG8GT's Avatar
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    All to be touched on is AFR tuning and torque management, which there is tons of. Timing too in some cases.
    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

  7. #7
    Advanced Tuner domestic rice's Avatar
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    Quote Originally Posted by Asylumwarp View Post
    Maybe you should just data log it and see if its way off. If so its time for a tune. If not, why spend the credits.. BTW, hows the camaro running?
    I had the credits so thats not an issue. I adjusted the DOD a little so it kicks it from v8 to 4 cyl a little sooner.

    As far as the camaro, its running real good. Still has the light surge from 1500-2000 rpm's. Tried a bunch of things but no dice. Plan on messing with the 02's to come on at 2000 rpms and I think it will be good to go.
    99Z A4 w/ SS LT's, h/f cats, magnaflow catback, port/polish t/b, egr deleted, ls6 intake, lid, 3.73's, hpt, performabuilt level 1 tranny, 3600 stall, Stage 2.5 (5.3 heads), Torquer 2 cam, 42# reworked injectors, TR6 plugs.

    2007 Avalanche LTZ - Catback and Eibach springs

  8. #8
    Senior Tuner IDRIVEAG8GT's Avatar
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    Quote Originally Posted by domestic rice View Post
    I had the credits so thats not an issue. I adjusted the DOD a little so it kicks it from v8 to 4 cyl a little sooner.

    As far as the camaro, its running real good. Still has the light surge from 1500-2000 rpm's. Tried a bunch of things but no dice. Plan on messing with the 02's to come on at 2000 rpms and I think it will be good to go.
    Did you time the injectors to the cam?
    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

  9. #9
    Advanced Tuner domestic rice's Avatar
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    Quote Originally Posted by IDRIVEAG8GT View Post
    Did you time the injectors to the cam?
    For which one? Ava or Z?
    99Z A4 w/ SS LT's, h/f cats, magnaflow catback, port/polish t/b, egr deleted, ls6 intake, lid, 3.73's, hpt, performabuilt level 1 tranny, 3600 stall, Stage 2.5 (5.3 heads), Torquer 2 cam, 42# reworked injectors, TR6 plugs.

    2007 Avalanche LTZ - Catback and Eibach springs

  10. #10
    Senior Tuner IDRIVEAG8GT's Avatar
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    Quote Originally Posted by domestic rice View Post
    For which one? Ava or Z?
    To the Z. Search Injector boundary timing. Helps a ton with the surge.
    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

  11. #11
    Advanced Tuner Asylumwarp's Avatar
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    Did you also check for timing surge?

    Hey as far as your STFT lean issue, i figured it out. Tune car, then change stoich under fuel, general, to 14.4 from 14.7, that usually fixes STFT lean issues like numbers 4-5 on the lean scale, and its not the switchpoints that does this i found out.