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does 2004 Mustang cobra need retune for smaller pulley

2614 Views 7 Replies 6 Participants Last post by  ericmuscle, 
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looking at buying an 2004 cobra with smaller supercharger pulley but owner says engine computer hasnt had a new tune for smaller pulley does it need one? thanks
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The DiabloSport Predator handheld tuner P/N: D/SU7142 has the ability to tune for up to 14lbs of boost for Terminators with a smaller pulley.
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