Junior Member, warming up (<31 posts)
Join Date: Mar 2016
Thanked 0 Times in 0 Posts
I am looking at a picture of the exhaust manifold that was taken out of a 2007 M5. It has the temperature sensor, along with the O2 pre-cat and post-cat sensors. Mine is a 2008, and OBD2 scan (with Torque Pro and BT connection to OBD2 scanner) shows my Cat temperatures rise in increments of 15C every 5 seconds when I graph it while driving the car from a cold start. If the temperature of the cats can be a predictable behavior most of the times, it makes sense to model them into the software and get rid of the extra sensor.
I think what you meant was: the sensors were in the earlier (2006-2007) models and were removed in 2008 on wards (?).