The basic K&N is designed to fit inside the standard box so once you know the part number it's a simple change. If you go beyond that to a cone filter you will need to discard the standard box and improvise a bit.Somebody on TM will probably have done this on your version of engine, and will surface eventually with more details.


DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4