I have an 05 Cooper with CVT. Some say that most of the Cold Air Intakes don't fit well with the CVT. True? Also, what is the benefit of the $49 K&N air filter? HP? Mileage? Sound? Thanks for you advice.

 

Well, we tried adding a K&N when we were doing dyno runs on a friend's cooper S... we did one run with the stock paper filter, one with a K&N, and one with no filter at all.

They were all pretty much the same... the benefit of the K&N is its ability to handle the dirt better than the stock paper filter, and the fact that you can wash it and keep it helps a lot. The air flow of a CLEAN stock paper filter compared to the K&N is pretty much the same.

I'm not sure about the cold air intake fitments... I don't know much about Cooper aftermarket products.

Hope this helps!