Here are some stats.

First MOT in June 2019:
2500/3000rpm.
CO%vol 0.10 Max 0.20
HCppm 11 Max 200
Idle
CO%vol 0.285 Max 0.30
Lambda 0.998 Range 0.97 - 1.03

2025 MOT
Failed AR flash
2500/3000rpm.
CO%vol 0.516 Max 0.20
HCppm 441 Max 200
Idle
CO%vol 0.03 Max 0.30
Lambda 0.994 Range 0.97 - 1.03

2025 MOT
Pass with standard map
2500/3000rpm.
CO%vol 0.019 Max 0.20
HCppm 9 Max 200
Idle
CO%vol 0.264 Max 0.30
Lambda 1.003 Range 0.97 - 1.03

New MOT. New MAF:
2500/3000rpm.
CO%vol 0.07 Max 0.20
HCppm 25 Max 200
Idle
CO%vol 0.17 Max 0.30
Lambda 1.000 Range 0.97 - 1.03

thumbs

DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4