Turbosmart's Boost Reference Adapters (BRAs) allow access to a reliable boost reference without compromising the operation of the car's standard sensors and control systems. The BRA attaches between the vehicle's MAP sensor and the intake manifold providing a pressure source to two ports while still allowing full uninterrupted pressure to the MAP sensor. The two ports allow users to run a wide variety of accessories such as boost gauges and blow-off valves with the responsiveness versatility and reliability that a traditional manifold pressure-operated system offers. Precision-machined out of billet aluminium Turbosmart's BRAs ensure an excellent fit zero leaks and complete compatibility with the OEM MAP sensor.