I have a 2008 ram 1500 with cold air intake and after market exhaust. I'm looking for advice on chips to get better gas mileage.
You could get a programmer with a pre-loaded tune, but mileage won't go up much if at all. Proper tire inflation and proper lubricants and keeping your speed reasonable are about all you can do.
I once used a special duel profile Crane RV cam on a Chevy truck with a small block V8 & got lots of torque, & hp. out of it, while getting good 21+ mpg. RV cams have average intake duration, with more exhaust duration- hence, duel profile intake & exhaust cam lobes.
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