Any update from Diablosport? Lyndon Wester (guy who custom programed the tune for my truck & my M.I.Laws H2 has been able to figure out the new GM tuning. He said that this was the most difficult yet, and he thinks others will have an extremly tough time figuring it out. I have a 93 HOT TUNE on my 2500HD, and I put a 87/89 dual tune on the H2. I have to say that the custom tunes made all the difference in the world.
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