THE- MAF housings are manufacturd from a robust hight-quality synthetic material.
The housing fits into the OEM Rs4 air cleaner box. (The mounts for the original O-Ring must be ground). On THE- MAF housing is an O-Ring insertion to ensure a better sealing to the OEM RS4 air cleaner box.
The original Rs4 sensor must be used. An adjustment of the engine control unit is also necessary.
We recommend the use with egines with increased performance over 650 hp.