SCT Canned Tunes MPG?

[Dirty_Stroke]

Guys my dad is going to TS for the weekend and he wants to take his 6.0 but it only gets 13.5mpg highway. I told him that I would loan him my SCT for the trip since I can't go (dang work!). Anyhow, my question is: Which one of the canned tunes will give him the most mpg?? My first thought was the Performance but I've ran it on the 65 horse Tow Tune before On my truck and it felt pretty strong on that tune too. He doesn't care about which is faster or blows smoke or any of that, just mpg. Btw, it's a 06 CCLB on 35's. Only mods are BPD EGR cooler and stock size exhaust straight piped.

[windrunner408]

performance

[colo_dually]

Run the highest HP tune on her, that's where I get my most mileage, and most guys here are the same. Since you're in a pinch, you don't have time to custom tuning, performance is the way to go. If he can keep his foot out of it, and isn't hauling anything, it will make a difference.

[Dirty_Stroke]

Thanks guys! Loaded the performance tune on her and took her for a spin and still only getting max of 21psi of boost and I knew something wasnt right! Got it home and come to find out he has a cracked cold side intercooler pipe! I knew it sounded like he might have a boost leak all along but glad I found it. I'm sure that's probably the reason he was only getting 13.5mpg highway too lol