coppolac said:
Good thread, I was looking for this type of info. I have a 2015 2500 6.0. I also have a I-tune 1000 that I used on my prior 09 Silverado 5.3, that I had geared differently for more towing capacity, I bought the tuner to adjust speedometer and to change a few other items, like temp control, shifting patterns etc. My thought since I purchased the new truck I wouldn't need to use the tuner for anything so I was going to sell it. I had it offered for $200 but now after dealing with some locals on wanting it for cheaper, I am thinking of keeping it and seeing what I can get out of it for my new truck. I don't remember exactly what stock tunes are available that would provide a little more power or even a little more MPG, so I wanted to through the question out here to a number of more knowledgeable people. Is it a good idea, or just leave things alone? I am towing a 5th wheel that will be 12 to 13 thousand pounds. Thanks in advance..
Thank you!
So far I have tried all the runes that came with mine and see no difference over stock.
I ran the MPG tune for a few weeks and saw NO change in my MPG. I ran all the other tunes and saw no change in the power, or the MPG over stock.
Right now I am running the stock tune, with the only change being that I corrected for the slightly larger tires I have now.
I am going to try a custom tune soon, and will report back on if it actually makes any noticeable change in the way the truck dives, or performs.
But honestly, I suspect that with these naturally aspirated motors there is vary little power to be had with just a computer.
We are not talking about a DOHC engine here, and there is no boost to turn up, so I suspect gains will be limited at best.
Let us know how your truck dose pulling that big TT. I don't think it will have any problems my self. The 6.0l is a hell of a motor.