Without eliminating the dpf/egr systems any gain in mpg will be minimal. A tuner may help a bit but i wouldn't expect a lot. When doing a dpf/egr delete and runnin a smarty jr (mandatory for the ecm to function properly) I typicaly see gains from 4-10mpg.
In my opinion for the dodge common rail (03+) engines there is one tuner to use and thats smarty. Yes others do work and will increase hp and mpg but for the results i've seen smarty is hands down the best.
Bullydog and banks are two companies that have really big names and not very impressive products.
In my opinion for the dodge common rail (03+) engines there is one tuner to use and thats smarty. Yes others do work and will increase hp and mpg but for the results i've seen smarty is hands down the best.
Bullydog and banks are two companies that have really big names and not very impressive products.