Prosport 52mm White Needle Boost Gauge This ELECTRICAL Boost Gauge will perform a pointer sweep/self check on start-up & shut down!If your vehicle is supercharged or turbocharged then this gauge is simply a must have. For peak performance you need to know how much boost you are making at maximum RPM’s. Now you can track your peak boost as you modify your ride! Features Save your Turbo-Set the warning function to alert you when you over boost!! Color: Amber/White Special Edition White Needle Reads -30 – 30psi Benefits Plug and Play Easy to read display Please Note: Amber/White display White pointer Applications Universal Applications What’s in the box? Sender mounting Cup Visor/Hood quick connect pigtail wiring Decal Instructions