Here is a translation from Robin @ RevDop:
And here is a prototype:
We are developing innovative, natural-looking intake systems for combustion engines to increase efficiency. One project relates to the optimization of the air filter box of the N54. The aim is to preserve an almost original look while optimizing the pressure drop in the system. This means less flow losses and higher efficiency (more power). More things will come in the right place for the next few days.
And here is a prototype: