So i dont really feel like spending the money qnd going through the trouble of taking out/storing the oem intake so i was wondering how an aftermaket filter (K&N, AFE, ??) would sound. I do think the car is too quiet and the was mainly interested in sound. I heard cars with an intake and really like the sound. I know an intake is probably more effective but dont really mind. I also know some people are concerned about the oil in the k&n's but honestly i never had a bad experience and i work for the service dept at bmw so i can get away with it should something bad happen (doubt it). Has anyone replaced just the oem filter than can give any impressions?
