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  1. #1 Re: stuttering at high rpm 
    GT Level Member DOUGLASMELTER's Avatar
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    she sounds great all the time just a slightly ruff idle and his crap cutting out for very tiny bursts. its killing the power but increasing fuel econ. mods r 1.0 pcm from zzp, msd ignition, k&n cold air kit, off road cat delete, 3.4 pulley
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  2. #2 Re: stuttering at high rpm 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by DOUGLASMELTER View Post
    she sounds great all the time just a slightly ruff idle and his crap cutting out for very tiny bursts. its killing the power but increasing fuel econ. mods r 1.0 pcm from zzp, msd ignition, k&n cold air kit, off road cat delete, 3.4 pulley
    3.4" is way too small. You might have the first stages of boom coming on.
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  3. #3 Re: stuttering at high rpm 
    GT Level Member DOUGLASMELTER's Avatar
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    do you mean detonation? also, why now? the pulley has been on the car for over 4 months and this just started.
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