Anybody uses K&N Stock replacment filters for C55.
I thought about getting renntech kit (airbox + ecu) but i found that little pricy for little hp gain.
Last edited by Quicktwinturbo; Jul 12, 2006 at 10:41 PM.
I thought about getting renntech kit (airbox + ecu) but i found that little pricy for little hp gain.
If you are going to replace filters use Green filters....
i currently have 2 in my clk55 and my brother has 1 in his e46 m3.
as for buying the aibox, dont do it, u can just modify ur stock airbox by grinding down all the ribs inside it, it basically the same thing


