A newer product has hit the performance side of Jeeps and other cars. This is a system of taking your existing throttle body, sending it to a shop and receiving another in exchange for your own. What they do is bore the inside throat diameter, adjust port sizes and basically "ream out" your downdraft throttle body unit. What's that gonna do?-More gas, More volume, More horsepower. This is amplified with an exhaust system, K&N airfilter system, performance chip, header and all the other add-ons I have mentioned before. Expect to put a few hours in for the conversion. Price of course is not cheap! Forking out next to $500.00+ canadain is a bit to rich for myself however those who dish out will not be dissapointed. There will be a slight decrease in fuel economy as well unlike the other modifications I have talked about they pretty much just add fuel economy.