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Thanks for posting this. I'm going to try your 20/20 on my 04 3500. It's super scarce finding anything on hpt for diesel.

I recently tuned my 6.2 with my buddy who's a great tuner but he isn't real familiar with the 6l80e tuning. He's done around 5-6 of them. I was just wondering if anyone had some pointers or advice...