[Skorov]

Originally Posted by moto-mike

That's correct. Just make sure to disable rear o2 learning and codes as mentioned elsewhere in this thread.

I thought the rear sensor was only used for Cat efficiency checks. Which map controls rear o2 learning?

edit: okay... I found the map to disable rear o2 learning.

A few more questions though. What is that map usually used for?

And, ecutek recommends disabling long term fuel trims when the rear o2 sensor input is repurposed or with FI. Is this a good idea? What's the reasoning behind this?

Thanks! @Sportsguy83 @steve99 @moto-mike