I'd look for a tuner that offers an 87 octane tune, that way you don't HAVE to run premium while running the tune. The tuner I have on my fullsize GMC is a Premium fuel tune, and if I don't run premium(which i ALWAYS HAVE), you can run into early detonation issues. NOT worth the risk in my opinion. I run a Superchips programmer, but Hypertech and others are just as good. Creep around a Jeep forum and see what others are running on that Jeep. I believe it's a WJ right? Good luck with the search.