I'm still working on the guide and review but let me just say the MM3 is a beaut! Very easy to install, has tons of monitors, and the tunes are flawless. I hadn't even tuned it before Ray sent me the updated firmware so I didn't have any hiccups. I had a few DTCs prior to installation and the tuner took care of those for me. I can't be happier with the MM3. At the risk of sounding like a pitch-man I consider it a much needed investment in the life of my truck.
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