IMHO
Its a preference thing. With the top 3 tuners IMO, Black Bear-Wheatly-Nelson Performance, it comes down to location and service. I really doubt that I could take my Tahoe to all 3, have each tune it, and really tell any difference. I was going to go black bear like 90% of people, but despite their popularity,its a small outfit and they stay busy. There is no # for them on their website, everything is Email based. Which irritates the hell out of me, but I can be somewhat impatient lol. I live like an hour and a half from Houston where Charlie Wheatly tunes, and I can call, text or email him at my discretion and get a response. If you live near any shop that has a good rep with tuning, you probably cant go wrong with the ability to drive to them for an in person tune. Just my thoughts and .02. FWIW, Ive had two Diesels tuned via EFI live.... Both LB7's. One was done by Idaho Rob at ATP (Search ANYWHERE, hes the #1 guy), and one by Diesel Diagnostics in my hometown, a year or two after they really started getting a good rep...
I paid ATP twice what I paid Diesel Diagnostics. And I honestly could not tell you a difference in either tune. Agian, just my .02/
