I have a spartan chip on my 2008 F250 (6.4 not 6.7) and also had the exhaust delete and a cold air induction installed. Made it a completely different truck. MPH went from 10 while pulling my boat to 15 and highway drive went from 13.5 to 16. The power difference was huge, it really makes that truck fly. I have been running this setup for 50,000 miles. I run the 210 Horepower track, I could bump it up but this setting was better for me as far as how comfortable I was with the truck shiffting and also how sensative the throttle is. I would probably have better MPG is I bumped it up to a faster tune.
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