Re: 6.7 allison 6 speed
You will need a stand alone trans controller, the best one to use is a PCS trans controller. Also tuning that 5r is going to be a nightmare, you might want to consider following through with your allison, or getting a 4r. Do some searching on the forums about tuning a 5r with a stand alone controller after a cummins swap and you'll get a better idea of where I'm coming from.
1999.5 F350 PSD CC Dually 05' Conversion
Stage I's - Gearhead Tuning - BTS - PCS
F550 rear suspension
1999.5 F350 PSD S/C 6spd Dually
R.I.P. Will Iott - "This ain't no practice run"
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