Discuss 1989 Mustang GT Computer chip swap on AllFordMustangs.com, the place for Mustang enthusiasts.
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Does any one put out a chip that will work with my 1989 GT? I have read you can gain up to 45 HP with simple chip up grade. Is that true and if so how costly is it and how labor intensive is it?
1989 Mustang GT Computer chip swap 
