89 mustang

  1. J

    Do I Need A Tune/chip For This Build.

    Hello everyone, im new to this site and looking forward to some great info. I have a 89 Mustang Gt, 5spd. Just got the car a couple weeks ago and it feels way way under powered for what it has in it. The guy told me he never had it tuned since he built it, but the MAF/injectors/throttle body...
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