Features Piping Diameter: 4" Precision CNC machined turbocharger V-Band flange TIG weld for strength and durability Straight-through design allows more air through to improve horsepower and overall performance Mandrel Bent 4" piping With Smooth transition to the exhaust system Higher Max Horsepower Power Curve Higher Initial Torque Curve - The torque curve hits faster and higher and longer Better throttle response and faster turbo spool-up times Expected gains of 20whp and 30wtq when used with a Stage 2 Tune Fitment For 2013-2015 BMW F20 F21 M135i For 2014-2016 BMW F22 F23 M235i For 2016-Present BMW F87 M2 For 2014-2016 F32 F33 435i/435i xDrive N55 Engine Models All N55 single turbo motors from 2013+

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