BMW F8x/F3x Turner Motorsport 45mm Boost Gauge - AmberProduct Details This Turner Motorsport 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 diagnosis power loss problems. Unlike many other options on the market, the Turner boost gauge looks truly at home in your interior. This gauge features both color matched back light as well as a