I did clean my air filter everytime after I service my car, which 5000km. Statement from K&N that you shud clean every 50,000km - I dun think it is applicable to our wether which is humid and due to dusty road, which you can found nearly every road in our country.... :dunno:
I'm using K&N recharge kit which I bought at N1 Racing (RM 70) - consist of cleaner and oil spray - this is the best price that I found - Maybe it could be more cheaper at somewhere else:huh:
But please - DO NOT USED COMPRESSED AIR to clean your K&N air filter... :getyourfactsright: