Quote Originally Posted by Winnie View Post
Shit I actually got that wrong, blue is pre tune and black is post tune. So your theory is correct.

Sent from my SM-G960F using Tapatalk
OK, ring Andy and ask which trace is current. I do think it is blue. More fuel does not necessarily mean more smoke under load, is also depends on overall tune.

If you look at your blue trace eng produces more kW / N-m and a reduced AFR (increased fuel) and fairly level. Love the result only if my CRD could a achieve this torque behavior.
Same trend (blue trace) in both your graph and Mark's tune result. Different outputs but same trend.

By the way rule of thumb:
It is best said that a diesel begins to smoke when the AFR gets below 15-14:1 for a non-turbo and 16-15:1 for a turbo-diesel.