Those that have tuned or programmed
My Smarty programmer has economy, tow and performance settings. My question is, do you all tow exclusively in tow mode or any of the other 2?
Forum Discussion
^^^I bet if you were to ever climb a long 6 or 7% grade at 60 mph, on a hot day with that 4020 you'd watch your gauges very close. In a situation like that, would you have to back off to prevent overheating or would your programmer defuel for you?
