Tested and working on multiple gen 2 B58s, both BMW variants and Supra variants.
See attached images below. Credits to Jonathan Tuite. This setup simulates what the "cat simulator" does for the armytrix and kenjiworx downpipes. Other spacers do not work due to how sensitive the DME is to the O2...
I wasn't able to find anything online but was told it should be the same as Z4. I was going to compare EU to US wiring but I couldn't find an EU VIN to view a wiring diagram.
I didn't do the swap myself, only the coding.
The work was done on a US Supra imported to Europe. The taillights were installed and the missing wire was ran to the taillight connector.
Video here showing the functionality: Armen's BMW Coding (@bmwcodingguru) • Instagram photos and videos
Gen 1 B58s have had great luck using this (including myself). For the price, it doesn't hurt to try and if it works on Gen 2 as well, the word can spread and people can enjoy their downpipes without a CEL :D
O2 Spacer That Works! (bimmerpost.com)
Hey guys, I've been eyeing Supras for a while and have been waiting for the newer MY's as they keep on making improvements. There's currently this 22 in my price range but I really want a 23+, at least I think I do because of what the press release said. I rented a 21 and the rear end felt way...
If the brake booster wasn't doing its job, you wouldn't have been able to get the rotors hot enough to have coloration. You're probably experiencing pad fade or fluid boiling