Some of the early Roadsters had the Plus 4 data on the CoC………..

The thing about the sooty black GDI exhaust though....which mine had until the flash......was that the sensor ahead of the cat was smooth medium grey, the sensor after the cat was sooty black - and this makes no sense to me at all.

2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) AR Plus 4