Priced at $189 they are an economical way to watch actual A/F ratio or Lambda on the Interceptor gauge. The kit contains: Bosch LSU4.9 wideband O2 sensor Wideband sensor controller with 0-5v output necessary cables steel bung Instructions to install and connect to Interceptor or other datalogging device Accuracy to 0.1 A/F point. Here is a picture of the kit: How it will display is shown above an AEM unit. Price will be $189 plus $8 shipped =$197 shipped If your interested, paypal is [email protected] Please list what your buying and your screenname in the notes!! If you have any questions please feel free to ask! These are in stock ready to ship izza: