So I have an 03 Mazda 6 V6. the car is a long way away from ready for upgrades, but I've still been looking around to see what kind of parts I can find. I saw a throttle body controller on a website. I was just curious if anyone has installed one, and if its worth it? also if you can send me a good website to find parts, I need to rebuild the engine and I would like to install some better then stock parts.