I have a 1972 Chevy Nova and I put a GM performance connect and cruise LT4 and 8L90E tranny in it. I have never been able to get the tune or shifts right and even after bringing it to a local performance garage, it's still off. A friend is helping me with the tune as I am not very good with this so in our last data log session we noticed something strange. The map sensor kpa is all over the place. It's very erratic but yet there are no DTCs. My guess is just a bad map sensor that is not throwing a code but before I swap it out, I wanted to post the tune and the data log here to ask the community.
You can see it in the data log right from the get go, but scroll to 2:21 and watch the madness.
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