Karbonius Carbon Fibre Airbox OEM Style - BMW E46 M3 / Z4M Civic (FK8) The dyno graph below shows

The dyno graph below shows the comparison between the stock airbox and the Eventuri intake system on a standard car with standard map and exhaust

The 6Sixty Monoblock line are the best performing and strongest vehicle load specific wheels that can be made for your vehicle (In Forged grade aluminium)

157 seconds

Comes with carbon fibre tailpipes

Select the optional Akrapovic sound kit for adjustable sound

Karbonius Carbon Fibre Airbox OEM Style - BMW E46 M3 / Z4M Civic (FK8) The dyno graph below shows2x2 Gloss Only The CSL Airbox is one of the most demanded improvements among BMW M3 E46 enthusiasts. That is both for performance gain, and for the sound it brings to the car. On the other hand, it is a laborious, time consuming and expensive modification. For those who are looking for similar sound to CSL airbox, but do not look for HP gain, we have developed the Karbonius OEM Style S54 airbox. It is a simplified version of CSL airbox, that, apart