Yes, it's back to square one, i.e. if it worth spending time on or not.
I just drove the car to and from work with the version with the raised 3700 load limit and normal OL fueling. It feels great, dip or not.
Thanks elBarto for the log. It's a bit hard to see with the resolution of the OFT logs, but it seems to dip too at 3700 rpm, though generally it is leaner below 4300 so it doesn't dip that rich. The dip appears to be smaller too. The reason I wanted to see an OFH log is that it's my understanding that the AVCS is tuned on that header. Maybe the same values are just not optimal with the Gruppe S header? I don't want to change AVCS randomly, though, so I guess I am stuck using other options or leaving it alone altogether.
I do think there was a difference with the corrected lean spot just above 4000 rpm. But it could be that I imagine things. I will for sure try to pull that down again.
Infact, I already made a new attempt at correcting the OL fueling, but didn't flash it because of the inactive AVCS ordeal. I think I will flash that next and see how it goes, including the raised load limit. I have to work quite a lot the next days, so next time I have some spare time.
I think the mistake here, was pulling the bend too high up at 3950:
Going to try with something more like this:
