0-20/0-30 Turbo Boost A/

The AutoMeter 0-20/0-30 turbo boost and vacuum gauge is an essential mechanical instrument for any serious engine builder, turbo enthusiast, or performance-oriented mechanic. This dual-range analog gauge monitors both positive boost pressure (up to 20 psi) and negative vacuum (up to 30 inches of mercury), making it indispensable for tuning forced-induction systems, diagnosing intake manifold conditions, and verifying proper supercharger or turbocharger operation. Whether you're installing a new turbo setup, troubleshooting boost-related drivability issues, or validating fuel injection mapping, this gauge provides real-time feedback that electronic sensors alone cannot always replicate with the same mechanical reliability.

This mechanical analog instrument features a 2-5/8-inch diameter black face dial that delivers precise readings across its 0–20 psi boost and 0–30 in HG vacuum ranges, allowing technicians to monitor transient boost spikes and vacuum decay patterns during acceleration, deceleration, and steady-state cruise. The gauge operates without electronic power or calibration, relying instead on direct pressure line connection to the intake manifold, turbo outlet, or supercharger discharge—a design philosophy that eliminates wiring failures and ensures accuracy in high-vibration, high-temperature engine compartments. The compact 4.5 x 4.2 x 5.2-inch form factor and 0.75 lb weight allow flexible mounting on a pillar pod, dashboard insert, or custom gauge panel without adding unnecessary bulk to the cabin.

Performance builders, turbocharged engine swappers, and diagnostic technicians benefit most from this AutoMeter boost/vacuum gauge because it provides instant visual confirmation of compression, boost delivery, and vacuum integrity—critical when validating tune changes, boost controller calibration, or suspected manifold leaks. Installation requires only a 1/8-inch NPT line from the intake manifold or turbo housing and optional vacuum line routing, making it compatible with nearly any carbureted, fuel-injected, naturally aspirated, or forced-induction engine platform. The mechanical design ensures operation in extreme under-hood environments where electronic sensors might drift or fail, making this gauge a reliable backup system and a cornerstone of any serious performance shop's diagnostic toolkit.