Stop guessing and start tuning for additional horsepower and reliability with the new FAST™ Dual Sensor Air/Fuel Meter. Dual wide-band O2 sensors measure air/fuel ratio in both engine banks simultaneously or average them together for precise tuning of carburetor jetting or EFI profiles

Features include built-in data logger with on-screen playback (no laptop required), outputs for external data loggers & digital gauges and a narrow-band simulator function

Affordably priced single sensor version can be easily upgraded to dual sensor unit; features field-flashable capability for downloading future updates

Built-in calibration and quick start-up deliver A/F readings in under a minute; kit comes complete with everything needed

Lighted, full graphical display makes it the easiest to use unit available; perfect for race, street and dyno-cell applications