Digital Exhaust CO Analyzer with Pulse Pump

Exhaust Gas Analyzer - Tune your car at home to achieve maximum performance with minimal emissions. The Gastester uses an exhaust probe and pulse pump to provide an exhaust gas sample to the tester. Unit reads the % of Carbon Monoxide produced. Runs on vehicle's 12 volt battery. Probe hose is about four feet in length. Includes power leads, probe and inter-connecting hoses and instructions. Made in England.