interesting- with my tp 87 & 93 tunes-it will lug in od with the cruise on to maintain the speed,maybe it has to do with my fat tq curve...

 

It must be from your fat tq curve, I don't know. I've rode in a truck with a TP tune and it did the same thing. I don't use cruise control in my car so I'm not speaking from experience there. I was speaking in terms of my 2006 F150, maybe the large tires had something to do with it. However it did do it from the factory with stock tires on it.

 

Agreed, I've got a few 'mileage' tunes and the partial throttle and low end feels weak so you end up spiking the rpms just moving with traffic or accelerating off a turn. Maybe in town with enough patience the mileage tune would show something but it made the truck feel too sluggish for me.

 

Agreed but that's changing your driving habits. The point is to change part throttle power so you slow down thus increasing your mileage. Otherwise it's all probably voodoo.

 

actually the rwtq on my 04 van was much better than that of my 03 supercab 4x4 5.4-maybe it's due to the true dual exhaust vs the 3" siso exhaust on my 03 and the udp's?-both were tuned by mike

 

The thing is that I was forced to change my driving habits due to the response. I've got little patience. The last time I got a tune from Justin I told him I wanted no thought given to mpg, just all power everywhere. I liked that tune much better. I saw no noticeable change in mpg just less throttle input, less rocketing of the engine and a much more satisfying feeling to get where I wanted to go in normal driving. Interesingly I datalogged a few 0-60 runs and had almost identical times so it still laid down the same power at full throttle. You just have to dig deeper for it. Probably works for some depending on driving style but I prefer the max performance tunes.