I was thinking of getting a CAI for my tc last year but because I'm living in one of the coldest city in the world (-3x degrees in winter) and I do drive my tc in winter, i think a CAI is not necessary. So right now im thinking of getting a K&N air filter instead coz I have seen many positive comments about it. But some people said that the oil substance from the K&N filter would mess up the MAP and there are actually more dust passing through the K&N filter compare to the OEM one. Is that the case? Any people using the K&N air filter pls give some comments