Performance Air Filter For Porsche 911 Panamera with 3.6L/ 3.8L /4.8L EnginesHigh Flow Induction: BMC Performance Filter for Porsche MA1 & M48 Series Engines Who Its For: Engineered for Porsche enthusiasts piloting the 997. 2 generation 911 or the 970 Panamera GTS. If you are running the MA1 flat six or the M48 V8, this is the first step in optimizing your engines volumetric efficiency. The Symptom: The factory paper filter in your Porsche is a compromise. Its designed for long service intervals and noise suppression, using