Most CAI's wont make a difference unless you use a tuner to let the computer compensate for the extra air. Plus with the use of a K&N, be prepared to have a dirty throttle body. I warned my friend about the use of one of those and he could not believe how nasty the throttle body was. Totally caked with dirt. He took it off immediately and put a regular filter back in, just as I did the same. Just try to find a quality air filter. Hopefully a tune will be available for the turbo in the future. That will make the most difference as turbos are very responsive to tunes.