I purchased a NW CAI for my N/A Crossfire. Rob is a great person to do business with. I have a friend that works at a local BMW dealership and I was able to use one of their air-conditioned service bays for the job. Installation was pretty straight forward. Just be VERY careful when cutting the electrical tape around the wires. I can see how it would be very easy to snip one, because they are very thin.

I started it up and no CEL, woot! I must've installed it correctly. I gave it a quick rev and heard the "noise" everyone talks about. It sounds pretty neat! Everytime I press or release the throttle, I get a little squeak from the intake. Midrange power is noticeably improved. It seems that the exhaust may be a touch louder too...but maybe that's just because I was going wide open at every chance possible, haha. I'm a happy customer .