Keeping track of the vacuum and boost on your forced induction application is critical for extracting the most power safely while keeping your engine in the powerband. AutoMeter's Digital Stepper Motor Boost/Vacuum Gauges provide the most accurate readings available, unparalleled response time and smooth needle movement. Taking advantage of AutoMeter's advanced circuitry, these gauges automatically calibrate on every startup to compensate for altitude, barometric pressure and other atmospheric conditions. Includes an advanced MAP sensor and wiring harness for ease of installation. Designed for gasoline engines, a boost only version is also available for diesel or extreme boost applications. Engineered using NASCAR technology and built for a lifetime of service under the harshest conditions, this is the no compromise gauge for no compromise builds. When you're ready for the best, there isn't another choice.Features: 7 user selectable colors (blue, white, red, green, cyan, violet, and yellow) to match visual preferences of driver and visibility conditions Built-in Pro-Control circuits with custom programmable activation & deactivation points for key functions like lights, fans, switches, & pumps allow drivers to focus on the competition while the gauges control key vehicle systems Set custom alert High and Low points specific to your vehicle & receive full dial warning notification to highlight the need for driver attention Acquire data for later review with one-touch Peak Recall functionality Gauge kit includes MAP Sensor, T-Fitting, nylon tubing, vacuum fittings, wiring harness, mounting hardware, and detailed instructions for installation 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system AutoMeter’s race proven digital stepper motor electric instruments provide unmatched accuracy which is further increased by utilizing a self calibration sequence during power up Product Description: 2-1/16" Boost/Vacuum Gauge, 30 In Hg/30 PSI, ElitePit Stop USA offers Auto Meter Elite Series Boost/Vacuum Gauge - 2-1/16 in. 5677 at low everyday prices. Be sure to check out all our products from Auto Meter including Auto Meter Pressure Gauges.