Currently live in Colorado and tuned on 91. Going on a trip to Georgia and wondering if I should run 91 for the entire trip. Not sure how or if the elevation change may come into play or if the gas quality may be a factor. Any advice is appreciated.

 

91 as opposed to what? If I'm road tripping I use 91 or 93 whichever I can get at the pump I'm at. I've had multiple 4g cars on cross country trips through the rockies, midwest, and west coast.