Ok...I've posted threads and replied to treads..just looking for more detail. Sorry if you see this theard in more than one place, just learning the ropes here. I have a 2003 with magna flow mufflers and an H-pipe. The car is AUTO (yea..yea...i know..lol). I am going to put a CAI on it, but undecided on brand. I've seen some talk of ECU tunning when you do that, but where do you have that done and what does it cost. Also, thanks to all of yall, considering gears, but I drive ALOT. Does anyone have any mpg numbers. And finally, I was considering some underdrive pulleys, but hear a lot of conflicting stuff, any feedback would be great! OH...sorry one more.....thinking about bringing it down maybe 1.5" front 2" rear....ideas???