I’m looking for a tune on a 2012 5.0. I’m getting about 13 MPG stock with 35s and a 4 inch lift. I was wanting something that could boost my MPG and maybe a little power. Not looking to spend to much. I know those are some high demands but moneys tight being only 16.

 

So you are gunna spend $300+ to get a tune to save half an mpg if you are lucky? You won’t see a pay back for like 50k miles at best.

Unless you actually need your truck for truck things, you’re better off buying something economical. It’s not even just gas. What happens when it comes time to replace those 35’s and it’s $2000+? It’s extremely difficult to find a 35” tire for under $300 these days.

 

Get rid of the 35s and lift. Go back to stock with nice street tires. Or as pointed out by @mass-hole already, get a Civic for the MPGs.

 

Based upon my experience, the price of a tune and tuning device will not be worth it for the minimal gains, if there are any to be had.

I have MPT tunes and they are very responsive so you could e-mail or contact them through FB and ask them if anything could actually be gained with a tune.

 

First thing to look at is speedometer correction. If you haven't done that then the miles per tank is wrong. You will show less miles on the trip meter than you have actually driven.
Go here and calculate the size difference (in percent) then you'll know how much to add to your trip meter to do a true hand calculation for real MPG.
www.dakota-truck.net/TIRECALC/tirecalc.html

 

there really just isnt much, if anything, left on the table tuning wise for fuel economy. OEMs spend an absolute fortune squeezing out any extra fuel milage to meet CAFE standards/fleet average requirements. Your right foot will make the biggest difference but with a lift and tires there's only so much you can do.

 

I have never installed a tune and gotten better mileage. I also had to drive more conservatively just to match untuned mileage. This was on GM, Mopar and Ford.

I think the increased throttle response in a lot if tunes tends to make a buyer think the engine is more efficient when it's not. Trans shift points in some tunes are not geared for efficiency either. E mail tunes are better than canned tunes but none will pay for themselves in fuel savings.

Better mileage is a selling point but I've never experienced it.

 

Once you get it tuned, you will have a hard time keeping your foot out of it.