We tested their engine back in 2013, it had an offset and a timer for the coolant temperature. So if you waited long enough between the test cycles the timer wo

We tested their engine back in 2013, it had an offset and a timer for the coolant temperature. So if you waited long enough between the test cycles the timer would run out and the actual coolant would be relayed to the ECU which would then run a different calibration. Its a joke but diesels unless they have major after-treatment systems just cant run that clean - as they become hotter (read: more efficient) they produce more NOx.