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Yes I had one on my truck for a couple of years, took it off when I got the PHP 6-pos chip. I thought the Trans Command did improve the shifts but the PHP tunes did quite a bit more & improved the shifting even more IMHO.
Just curious but you have the dp f5 so why would you be thinking about the Trans Command ?
I have one on BigRed but it is bypassed. When I got the DP installed seemed like the truck got confused for the shift profile . It likes the DP much better. So when the DP got installed out came the Ottominder chip which is also just sitting here on the shelf! So if anybody need a Banks Ottominder chip PMT2 It needs a home ! Will sell DIRT CHEAP!!