These are Brand New N54 Turbochargers with an Upgraded Forged Billet Compressor Wheel Comparable in flow to a 17T Turbo. Turbo Response is Absolutely Amazing. 2 Inlet pipes needed. New Castings (NO CORES NEEDED). Brand New Wastegate Actuators. High Flow Forged Billet Compressor Wheels. Component Balanced, Dynamic Balanced Than VSR Balanced. This is TD04L 17T Turbine Wheel Available (6+6, 43.4mm58mm). Maybe some Modifications needed to install. Billet Wastegate Flapper Valves (Stainless Steel with Thicker Rod). +2 Black Inlets Silicone Hose Pipe. Replace your restrictive factory intake system with the silicone intake kit featuring high quality, one piece, steel wire reinforced silicone construction. Gains of up to 30whp can be realized by replacing the restrictive factory intake inlets with this bolt on kit. This inlet kit include everything you See in photo. This listing is for upgraded turbo inlet sizes 2. For TD04-16T, TD04-17T, TD04-19T Turbos. For 2008 – 2010 BMW 135i Models. For 2007 – 2010 BMW 335i Models. For 2009 – 2010 BMW 335i xDrive Models. For 2011 BMW 335i xDrive Models. For 2011 – 2013 BMW 335is Models. For 2008 – 2010 BMW 535 535i Models. For 2009 – 2010 BMW 535 535i xDrive Models. Professional Installation recommended(No Instruction Included).