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    1. #19
      Join Date
      Jul 2005
      Posts
      202
      Country Flag: United States
      If you want to learn your own tuning another option is a GM TPI ECU. It is way cheap and the software to tweak them is readily available and good. It takes a bit more work to get a good understanding, but you can buy a used ECU for $50 and a new wiring harness for $320. They have a tremendous amount of support from forum groups. There are limitations as with everything.

      Good luck






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