I thinking of finally getting the PCM tune for my birthday, I just wanted to know what set up everyone is running or prefer. Eco, towing, or performance. Right now I have the leveling kit, treadwright guard dogs, and 3.73 gearing. I do tow every now and then a motorcycle, double axle trailer with a f150, logs, and a zero turn.
Being badass ain't cheap, being cheap ain't badass
I'm at 4980 feet (officially for my town anyway) and I regularly drive up over 9000ft in the Summer. Unfortunately I didn't have enough experience with my truck before getting tuned to tell you if there was a noticeable difference at altitude. But for what its worth, I've never been able to tell any difference between 87-89-91 in my vehicle. I've tried throwing in 91 when I was towing a 5000# trailer up the mountain, and didn't feel any change. So I just stick with the cheap stuff.