I'm new to this forum, as I've only had my Miata for about a year. I will be moving to Arizona in a few months and the one concern I have is driving the car continually with the AC on. Anyone who lives in AZ knows that driving without the AC is just not an option, and I know this from first-hand experience.

So I'm trying to get opinions on what the best add-on performance upgrades are, ie, headers, exhaust, ignition, chips, etc. I don't mind spending some money, but I do want to get everything done at once before I leave and it has to be an add-on, not anything that involves pulling the engine, drivetrain or top end. I want to get a chip for the car, but not some cheesy Ebay one, so any insight in that would be greatly appreciated.

Look forward to everyone's thoughts.