I just came across this GRG video from 2 years ago. I searched in this forum but couldn't find anything. Has anyone replicated this method, and how well did it work for you?
https://www.youtube.com/watch?v=WoXTmdTQkpE
I have to say it doesn't make sense to me. If I understand correctly, he's trying to solve this equation: (1-FlowFactor)*MAF_error + FlowFactor*VE_error = total fuel trim
FlowFactor and fuel trim are known, but that still leaves one equation with two unknowns (not enough information to solve).
I think it also inherently assumes the MAF and VE errors occur in the same direction (both positive or both negative). But consider this scenario:
- Flow Factor = 50%
- measured fuel trim = +3%
- actual VVE error = +8%
- actual MAF error = -2%
In this scenario, wouldn't this method push the MAF error further into the negative?