I had an 08 F250 4x4 Lariat (85,000 miles) w/ Spartan tuner, loved it until my HPFP took a dump and Ford put a band aid on it under warranty. After the reflash my tuner wouldn't run the truck it still kept going into limp mode. Back to factory setting sucks!! Found a 2014 F350 4x4 KR SRW LB and LOVE the power and mileage this truck has. Getting 19 mpg on interstate. Not seeing as many regens either, I am selling my tuner, no need for it in this one!! Also technology with the new one there is no comparison with 08 models... My .02....