DB-Gauge Green

The DB-Gauge Green is a precision air-fuel ratio gauge designed specifically for serious engine tuners and automotive professionals. This compact monitoring instrument is essential for anyone dialing in carburetor jetting, fuel injection mapping, or verifying proper combustion efficiency across varying engine loads and RPM ranges.

This gauge functions by measuring exhaust gas oxygen content through a wideband oxygen sensor circuit, translating sensor output into precise air-fuel ratio (AFR) readings. The green display design minimizes eye fatigue during extended tuning sessions and provides excellent visibility in both daylight and low-light conditions. The gauge is engineered to ensure accurate, lag-free readings that respond immediately to fuel trim changes.

The DB-Gauge Green is particularly beneficial for optimizing naturally aspirated setups, tuning forced-induction platforms, and diagnosing fuel delivery issues. Its compact form factor allows for flexible mounting options on the dashboard, steering column, or A-pillar without compromising interior aesthetics. This gauge is indispensable for real-time tuning feedback during dyno work or street validation runs.