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  1. Weird shutter...

    FWD Transaxle Components
    So after installing a shift kit and new ported tb... and recently when I have it in 1st and do a pull it shutter around 5500 rpm... But whats weird is when I have it in Drive it wont do it.. Not only that but it will shift at 5700 in 1 and 6100 in D. Is there something wrong with my tune... its...
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