Which wideband do you have...?

As far as I can tell, looks like V3 requires wideband to be connected via serial comm or CAN (in the case of AEM -0333/0334).
More info:
https://service.efilive.com/kb/artic...g-flashscan-v3
https://service.efilive.com/kb/articles/pin-assignments
https://service.efilive.com/kb/artic...-specification

Let me check and get back to you.