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    1. #9
      Join Date
      Dec 2004
      Location
      Grand Haven, MI
      Posts
      71
      I actually just started messing around with GM ecm stuff this a couple of weeks ago. I am trying to modify the 7730 prom. I used WinBin and TunerPro. I liked them both. TunerPro had a lot more functions than Winbin, but both were pretty straight forward.






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