aFe Power Magnum FORCE 54-10469-B BMW M3 (E46) Torque Booster Tube Perfect upgrade to convert the Stage 1 intake system (P/N: 51/54-10461) into a Stage 2 intake system Constructed of 3-ply reinforced silicone connects the billet 3-angle adaptor on the Stage 1 system to the intake manifold Can also be used to replace the factory intake elbow on the OE air intake system This product is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles.