So the car still isn’t shifting as it should and I’m sick of dealers telling me they can’t see anything.
So I bought a d can cable and MHD flasher (monitor) which shows the attached. The green line is revs and you can see fuel trims and timing being retarded well in advance of the shift in the graph.
I don’t know if this is normal and need to compare with someone else’s graph on an N54. Can anyone help?
Where the graph shows retarded ignition and lower fuel trims etc that’s when I can feel the car slow like I’ve tapped the brakes just before it shifts and power returns.