I have a question on how most approach a tune done from someone else. The reason I ask this question I seen a video of a tuner and he loaded the factory tune back on and started from there. Also he was tuning a similar setup as I have. I have a 2011 c6 ls3 a6 e-force 3.50 pulley with the tune provided from edelbrock. If I was to approach it that way I know a few things I need to adjust then moving on to get maf dialed in. I know I would have to change the injection data for the ls9 inj's, 160 stat and rear 02's. There maybe other things I am unaware of going that route. I do know the a6 has been re-tuned with the can tune. Let me know what you guys think start fresh or the can tune route. On a side note I never upgraded my mpv1 pro, I may have soon since is not supported with windows 11. I am at the point that I am determined to learn self tuning.
Kerry