Why K&N Air Filters Are Bad For You

Customer complained of an illuminated check engine light and poor performance. It didn’t take long to discover the root cause. Why? Why? WHY!!?? Please just say no to aftermarket air filter/intake systems that claim to improve performance and fuel mileage. They don’t.

Subscribe now to The Car Doctor Channel

Видео Why K&N Air Filters Are Bad For You канала The Car Doctor