AWE Tuning B8 3.0T S-FLO FilterThe S FLO Filter is the largest filter that can fit within the factory air box, and also our bespoke filter of choice for all 3. 0T S FLO packages. The AWE S FLO Filter is a proprietary, washable, dry media, large cylindrical filter that has been tested to allow up to 34% more airflow than the factory paper filter. This Part Fits: Year Make Model Submodel 2009 Audi A4 Quattro Base 2009 Audi A4 Quattro Cabriolet 2008 2010 Audi A5 Quattro Base 2009 2010