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    NEED HELP ON 2007 Shelby GT500.

    I just bought a ZEX EFI kit and im wondering if I in fact need a tune for it. im going to be running a 75 shot. current mods: 2.59 vmp pulley JLT Carbon fiber intake 2008 lower pulley VMP 91 octane tune. Im going to be changing out spark plugs with NGK TR6's. I just need some input on this...
  2. T

    Need Tune help! 2007 Shelby GT500

    I just bought a ZEX EFI kit and im wondering if I in fact need a tune for it. im going to be running a 75 shot. current mods: 2.59 vmp pulley JLT Carbon fiber intake 2008 lower pulley VMP 91 octane tune. Im going to be changing out spark plugs with NGK TR6's. I just need some input on this...

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