[Funracer]

It’s an AEM wideband controller. Used by many others here over many years in conjunction with SSI exhaust. What’s a bit different about mine is the JBell gauge, but he has made dozens of them for many here that use the same controller.

Are you saying 15.8 could be normal idle reading with SSI’s?

Out of town for the weekend. When I get back I will take a cold start video to get your impressions.

If my FV is set to 45% with O2 connected, should my AFR gauge read 14.7 at idle?

Thanks