GlowShift’s Red Digital Series Boost/Vacuum Gauge is a must have for anyone that has a turbo or super charger installed in their vehicle. This 2 1/16th inch (52mm) electronically driven turbo boost gauge precisely monitors your vehicle’s compression and boost levels from -14.5HG to 45PSI, ensuring that your turbo does not over boost causing major damage to your engine. GlowShift’s Red Digital Boost and Vacuum Gauge offers a collection of high end features that include an easy to read red LED digital readout, a self-calibration mode, an ultra-thin design, as well as a low profile tinted lens. The included red digital LED readout allows you to easily view all gauge readings regardless of the angle or lighting conditions. This boost/vacuum gauge includes an electronic boost sensor, 6 feet of vacuum hose, and a non-restricted T-fitting that allows it to be connected to any vacuum line. For easier night driving, GlowShift’s red digital boost gauge features a dimming function that allows the gauge to dim 30% when your headlights are switched on. GlowShift stands behind all of its products by including free lifetime technical support and a one year limited warranty with every gauge purchase.