The latest EGR video is on my to watch list
They are incredibly helpful vids.
That'll be my job on a few days that the car isn't been used.
Well I've made some progress.
I've now got the MAF readings to a better range by cleaning with Electrical Contact Cleaner that leaves no residue. Also cleaning all the oily residue off the fitting it to screws into. Everything was coated in a film of oil.
Idle now 25kg/h
1000rpm now 37.8kg/h
2000rpm now 98kg/h
Much better than the previous
Idle was 55kg/h
1000rpm was 63kg/h
2000rpm was 143kg/h
Tiny win.