FAST™ engineers have developed a kit that makes it easy for anyone to measure their engine’s air/fuel ratio. This plug-and-play universal O2 sensor processing kit allows your data acquisition system or dyno software to record and display air/fuel ratios. Since it uses fully automatic sensor calibration, there’s no need for manual “free-air” calibration that competitive units require. Additionally, each sensor kit is a standalone unit, so using multiple kits for measuring all your engine’s cylinders is easy.