Karbonius Carbon Fibre Airbox OEM Style - BMW E46 M3 / Z4M S4 (B7) AUX-based CarPlay systems

AUX-based CarPlay systems

No drilling is required to install the front lip

The E39 M5 Eventuri system uses our Patent Pending Carbon fibre Housings with our bespoke Gen-2 filter which provide an aerodynamically efficient airflow path from the filter to the inlet tubes

These BMW M Performance style tips are supplied as a pair and are available in stainless steel or stealthy ceramic black

Dyno Graph (Headers + Evolve Exhaust only Conversion)

Karbonius Carbon Fibre Airbox OEM Style - BMW E46 M3 / Z4M S4 (B7) AUX-based CarPlay systems2x2 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