Thanks Mick...for everything....you got me started in this.
Lean tip-in hasn't changed. I have noticed that at times I don't get the rich 'tip-out' on sudden decel. Not too worried about decel though because DFCO will take care of that.
Very strange that the different OS made the AFR go a full 2pts richer globally.
Nearly back to dialled in and will try the 4LO this weekend.