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4th Gen Ram Tech2009 - 2018 Rams and the 2019 Ram Classic: This section is for TECHNICAL discussions only, that involve the 2009 - 2018 Rams and the 2019 Ram Classic. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
a few weeks back i posted "final pics of my truck" 'cuz i was done with the mods as far as looks go...i lied, here it is with the procomp 6" lift and 37" bfg's
1. did you reprogram the ECU for the bigger tires?
2. is there a big change in MPG from stock to 35's to 37's?
Thanks
1- i havent reprogammed the ecu, and dont know how
2- havent noticed a big difference on mpg, partially cuz i havent driven too much, but before i was getting 19-20 L / 100km(i have a very heavy foot) checked it last night and i was at 20.8 L / 100km will update in a week
and remember, before you can get real MPG you need to have comp recalibrated for the bigger tires... Dealer can do it, unless you know someone with a programmer...