letstwistagain SG Hi, i am considering changing the filter in the air of my nissan sunny 01 to K&N ones. Is it really useful? any effect on the car? any one with exprience? Thanks
dajaja9 SG hi, K&N is a good air filter. the filter itself is washable and reusable. you will notice minimal gains say 1-3kw gain.
slacker001 SG apart from performance gain, is there any improvement in FC? do drop in filters make the engine oil get dirtier faster?