I bought a new to me 2014 Chevy two weeks ago and I want to give it a little more power with a tuner and maybe get it shifting firmer. There are so many brands, Edge, Bully Dog, Diablo, SCT, Superchips. Which is going to give my truck the most power? Do I have to run premium gas? If I run regular gas with a programmer will it still gain power?
New to me 2014 Chevy, tuner questions
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Personally, I prefer SCT products. 
To get the most power gains you need to run premium. 87 octane tunes will give very minor power gains.
To get the most power gains you need to run premium. 87 octane tunes will give very minor power gains.