I have an 04 Super Cab FX4 with a 5.4/auto. I have done the exhaust(Flowmaster) and K&N cold air system. I would like to do a programmer next. I would like to be able to adjust it for mileage/highway, performance(most of the time) and tow mode. I feel the tow mode is a must since I tow a large (6000 LB.) boat several hundred miles a few time a year. Any help/suggestions would be appreciated.

 

Unless you grossly overload your truck, towing that 6k boat, provided you have tow pkg. shouldn't be a problem. Otherwise make sure you install a transmission cooler.

As for tuners, it seems the Diablo Sport & SuperChips are the popular ones. Check out the "tuner" thread at the top of this forum (highlited in RED), there's some pretty good info there.

Also, check out this current thread: https://www.ford-trucks.com/forums/s...60#post2521560

 

Just got off the phone with Diablo, They say they are the only one's who Dyno at the wheel's while the other guy's are at the crank
So i vote Diablo