Read real time AFR values on any model equipped with a carburetor With the Wego III you are doing the same thing they are doing at the dyno. Simply hook up this device and it will quickly, and accurately tell you exactly how your bike is running Knowing the actual AFR values is key when making jet changes, no more seat of the pants dyno tuning Friend has a carbureted bike too? Great! you can hook this up to his/her bike too provided an bung is installed Install the Wego on a bike with Twin Tec's TCFI, and the pair will auto-tune the fuel tables while you ride the bike Auto-tuning under actual riding conditions only takes a few hours and gives much more realistic results that dyno tuning Air-cooled engines are very sensitive to thermal effects and dyno systems generally have inadequate cooling airflow Requires installation of an sensor bung(s) 402-042 if not already equipped Minor welding required for bung installation