This is a performance enhancing induction kit for the B48 G20 and G21 320i and 330i. For a full list of compatibility please see chart below. Features Improved throttle response Dyno results: max gains 12-14bhp (this may vary dependant on vehicle) Easy to maintain dry pleated filter Cold air straight to the turbo charger What Does It Do? This induction kit delivers increased air flow and induction noise over the standard restrictive air box. Whether this kit is being installed to a standard vehicle or to an already tuned vehicle, you can be sure of the positive performance gains this will deliver. What Will I Get? MST Performance utilise the highest quality components in all of their kits, see below for what this kit will include... Black powder coated inlet pipe Roto-Molded Crosslinked Polyethylene Heat Shield Black silicone intake pipe Red pleated filter Full fitting kit with easy step by step instructions Fits: BMW 3 Series (G20/G21/G28/G81) 2.0 (B48) 2018-2020 BMW 4 Series (G22/G23/G24) 2.0 (B48) 2020