It's interesting as I have been researching this for a bit. Oddly, some tuners that previously had tunes no longer offer them. I reached out to one individual that I knew was running a tune from one of these companies to ask if he had any issues and although he said he had not, he was told to stop running that particular tune. I reached out to the tuner and they wouldn't say much other than "it is not longer offered". They wouldn't say anything else when I pressed a little. I run the Stealth module which is fine but honestly it's hard to tell the difference between it and just running the truck in "Sport" mode which I continue to do anyhow.
I would be very interested in running tunes on my truck but other then 5star and a few odds and ends, they are hard to track down. It appears as the 5star gets about 50HP or so which is about the highest I have seen. I am wondering if anyone else has had any other luck with running tunes and have been happy with the results. Thanks for any insight.