Looking for a can tuner for a 17 gmc. I haven't been in the diesel game in awhile and I'm not sure what to get. google searches and forum searches weren't much help. I know EFI live is/was the best at one time and that's what I had on my LLY but I don't want to void my warranty with this new one. Not much a tower so really looking for power and fuel mileage help.
