Review on Auto Meter 4379 Ultra-Lite Wide Band Air Fuel Ratio Kit: Accurate Monitoring at 2.3125 Inches by Jason Marquez

This AFR was easy to install and had great instructions. Its diameter is 2 1/16 inches, which is a bit confusing according to Revain's description. You cannot change the AFR ratio if you want to use E50 or E85. Autometer makes broadband that you can change, but it's $100 more expensive. The output is in the 0-4V range so you can use the broadband output to register the AFR in your tuning software. I want the output to be 0-5V. This would make tuning much more accurate and many more math PIDs would be available.