jasu1@msn.com

I have 2015 v8 4x4, I use it to tow my travel trailer, the MPG is around 10 MPG. I will like to know if is worth to buy one and wich one to buy.

BlkNBlu

We don't use chips, that's back in the early 90s. It's called tuners..

You want to get a towing tune. Many to pick from. Try googling.

dsg2003mach1

a tune definitely perks them up, especially the trans tuning but sadly there isn't much a tune can do to improve fuel milage. Easy on the throttle and lower cruising speed is about all you can do short of a different trailer configuration that might lighter and/or more aerodynamic