The Audi RS6, RS7 C7 4.0ltr T is a great car for tuning with huge gains available for just adding a few bolt-on items. A quick and easy way to do this is to help the engine breath by replacing the factory air filter for an ITG tri foam filter system allowing for a smoother few flowing item. Designed as a direct replacement this air filter can be replaced on the drive way in a matter of minutes.
Engine Code: CRDB
Filter Size: 100 x 180
Part Number: BH-304
Why foam? Because, compared to paper or other filter technologies, reticulated polyester foam achieves optimum performance against three key criteria:
the ability to allow air to pass through without causing a large drop in pressure.
the capability to arrest a high proportion of airborne dust while feeding the engine clean air.
the capability to absorb a large amount of dust without reducing air flow capacity.