Quote:
Originally Posted by sawtooth
I don't have Spartan yet. I have researched this to death and no one seems to have issues with these things. Fuel mileage will start at 2-3mpg better and go all the way to 5 or 6 better depending on how you drive and which Spartan tune you use as the higher ones do better. GM trucks cannot take the higher tunes on the factory Allison cause there only designed for around 500hp. In order to run the higher tunes they must beef up the tranny. The Torque Shift can handle up to around 600hp or so. I believe these numbers are correct but if not someone will correct me. The one thing i know for sure is the Torque Shift is much stronger a stock Allison. Allison however has plans to upgrade their tranny in the next couple of years. I hear they may be going as high as 8 speeds but not sure.
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Is the spartan a reprogramer or does it piggy back the stock? was wondering if it leaves a foot print? i have an extended warrenty just to be on the safe side but dont really want to viod it. I have buddys at ford dealers but dont know much about the spartan
