Snow Performance SNO-2169-BRD Stage 2.5 Boost Cooler Direct Port Water-Methanol Injection Kit - USA-SNO-2169-BRD - Snow Performance has combined performance, quality, and easy installation in this new water-methanol injection system engineered specifically for N54/N55 BM Ws. Increase your pump gas octane by 25 points and make more power efficiently with a cooler running motor! Complete with custom water-methanol injection throttle body spacer plate, braided stainless line, and 4AN fittings offering unsurpassed reliability and ease of installation. The Stage 2 uses a progressive VC-50 controller(ISO 9001 Manufactured) that proportionally injects more or less according to boost pressure. Start and full points are adjustable for engagement and delivery curve to match what the engine requires. Proportionally injecting according to boost pressure gives an accurate delivery of water-methanol and allows cooling and performance improvements over a wide range for improved drivability. The VC-50 controller (52mm gauge) offers the functionality of a boost gauge and water-methanol controller all in one! Highlighting a 7 color(Blue, White, Red, Yellow, Orange, Purple, Green) OLED screen displaying boost, percentage of injection, low level, secondary nozzle activation, prime button, and 2 fault codes directly on the screen you can tailor the controller to match your OEM gauges or mix and match up to two colors.  Snow Performance Direct Port Injection Plates are the easiest, best-selling way to mount water-meth nozzles. Simply fit between the head and intake manifold and enjoy the placement of 6 Snow Performance Hyper-Sonic™ nozzles right where you need it! Our Direct Port Injection Plate is the easiest and best way to install water-methanol on your BMW N54/N55 Engine.      Includes: Direct Port Injection Plate for N54/N55  OEM O-Ring gaskets to seal between injection plate and head  Required Hardware for Installation Instructions for fitment on N54/N55 style engines Hardlines plumbed to distribution rail Six 1.5GPH Nozzles installed in plate High flow water-methanol solenoids N54/N55 engine specific boost tap  Everything needed for installation    *Direct N54 / N55 Fitment* *Specify nozzle sizes in order comments otherwise the kit will come with No.2 nozzles* *Note- For safety, a solenoid (part #40060) must be used when injecting post throttle body to prevent vacuum siphoning*