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92 Posts
I have the I-1000 on my 2013 6.2L. The biggest difference I noticed was with the TCM. After just messing around myself, the transmission feels much improved. I eventually got a custom tune from Lew as well. At that time, I also added 4.56 gears, headers, and 90mm TB; so it was difficult to pinpoint exactly what provided the most gains.
