G-Force III Electronic Boost ControllerThe latest iteration of GFBs feature packed electronic boost controller now has the ability to monitor and display your engines air fuel ratio in either Lambda or AFR. By connecting the analogue output of most wideband O2 controllers (i. e. Innovate LC 2, AEM UEGO etc, sold separately) to the G Force IIIs auxiliary input, you can toggle between boost pressure and air fuel ratio display. Not only does this save you from having to install a separate AFR