Hi guys
Technically, only the green label can run a stock lambda as the original ECU did (ie to protect the cat). I am talking about the proper closed loop conversion offered by MSD
I did check this myself before buying it. According to Stu at MSD, any L8 ECU can be adapted to run closed loop by them.
I bought it recently with the intention to get this conversion done by MSD, but due to the massive distance between me and them, I have since decided to go done the replacement ECU route, and buy an OMEX.
If you want to be sure, check with Stu before buying.
Check out my technical query under 'Technical Help Q&A' for a subject called 'Tuning Beyond Greens'. This was posted by me a while ago. Last time I found it on page 6 about halfway up the post.
Hope this answers any queries.
JJ