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Thread: 2008 Shelby Pulley Tune no Power

  1. #1
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    2008 Shelby Pulley Tune no Power

    Hi,

    on the dyno I work on a 2008 Shelby with Steeda 2,7" Pulley and cold air intake.
    this is my first 2008 Shelby i have to tune.
    the car runs on 10,5 PSI but I cant get some power. Car still have 472PS and 626Nm
    here the log and the file.

    i´m thankfully for any help
    Attached Files Attached Files

  2. #2
    Senior Tuner SultanHassanMasTuning's Avatar
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    look at your o2 mv one band is not active at all wideband reading?

    I think your car is lean
    Last edited by SultanHassanMasTuning; 09-09-2014 at 12:26 AM.
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  3. #3
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    o2 sensor work now. wideband shows 11.4-11.6 afr, 24° spark and 10,5psi boost but still no power...

  4. #4
    HPT Employee Eric@HPTuners's Avatar
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    Quote Originally Posted by zr1driver View Post
    o2 sensor work now. wideband shows 11.4-11.6 afr, 24° spark and 10,5psi boost but still no power...
    That's pretty low boost. Sounds like you may have a leak, or perhaps belt slippage.
    Eric Brooks
    HP Tuners, LLC

  5. #5
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    Today I spoke with steeda and they mean stock boost is 7psi (I don't know) and the 2,7" pulley adds 3 psi.
    Has anyone experience how much boost a stock Shelby has and what boost with pulley?

  6. #6
    24 degrees of timing? are you sure you're not fighting a retard? Have you logged actual spark advance? and source?

  7. #7
    Senior Tuner SultanHassanMasTuning's Avatar
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    you should target around 20 on pump, readjust your BLK table
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  8. #8
    Senior Tuner SultanHassanMasTuning's Avatar
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    post another log with your mv actually working.
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  9. #9
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    Im unable to download your tune. What version are you using?
    2019 Ford Raptor Tow Rig Scarab 195 Open 250HO
    2008 Shelby GT500 VMP Gen II-R (17psi), JLT 123mm CAI, Ford SCJ Monoblade Throttle Body, 56# Injectors, BoostAPumps, VMP triple pass heat exchanger (dual fan), 170* thermostat, BBK long tube headers, Dual resonators, Magnaflow Catback, LC2 Wideband, RXT clutch

  10. #10
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    got the problem, crank trigger wheel was wrong installed in another workshop. now the car make 607PS and runs fine. :-)