I have CAI, TB, and exhaust. Next is the x cal2. I have a 2.3L how much more power would I gain from this? Would it be equal to the CAI? Since you go up to 91 octane will you make better MPG to offset teh price difference in the gas? Will it void your warrant? Can the people at dealership tell if you just reset to stock when u drive back to them? I also have a auto so with the increased rev limiter will my car be shifting at 7200 now at WOT?