ECS Tuning introduces a new and innovative way to install a boost gauge into your BMW. This electronically-actuated gauge allows for easy and accurate monitoring of turbocharger boost pressure. Keeping track of boost pressure is a great way of consistently checking engine performance and a fantastic way of diagnosing power loss problems. Included is an ECS Tuning boost gauge, designed and manufactured for outstanding performance and accurate boost readings. Not satisfied with other gauges available on the market, we stepped up to the plate to design a gauge that looks truly at home in your interior. This gauge features both color-matched backlight as well as a type face that is identical to factory BMW gauges in late-model vehicles. This is an exclusive design that is the only option on the market if you're looking to continue the clean design of your BMW's interior. Kit includes: ECS Tuning 45mm boost gauge Installation hardware, connectors, and lines For E9X 3 Series models, please see our innovative Vent Pod Boost Gauge Kits for an easy, clean install. Will not work on N55 motor vehicles.