megasquirt 2 and lambda sensor

Hi, I've got a mk1 caddy, with an AGU. I've had a custom loom made for the engine/MS2.
There's a wire for the lambda sensor on the loom, how do I wire the lambda sensor in? Do I need a controller too?
Thanks

It depends if you want to run a wideband or a narrowband lambda sensor.

If you run a narrowband you don't need a controller.

If you run a wideband you will need a controller.

MS2 can be set up in Tunerstudio to run either..