My big end this year was 17-18 mph compared to 20-21 mph last year. That'* not the same.
5 mph is significant.
Last year was with a 3.0 pulley and Gen3 and this year was 3.2 pulley and GenV.
The WOT A/F mixture shows on my wideband as 10.9:1 and I don't see any KR with WOT timing at 19*
Your right I was looking at the wrong side of the slip. Are you still running stock injectors? Have you scanned injectors duty cycle?
Even tho the A/F mixture seems rich, I have noticed KR when applying low speed load. Seems like the fuel does not react soon enough. If I let up a little the KR disappears, then I can get back into it without any KR.
If I manually downshift, I do not get KR.
If I punch it from 30 mph and it downshifts, I get KR...
WOT from a stop, I get NO KR.
I have an Aeroforce gauge. What do I look for to determin duty cycle? What should it be?