OK, thanks.
I can't find the tuning section i thought i remembered about being able to edit specific functions, ie. only edit the values you specify.
Based on that, the only other conclusion i can come up with, is that someone is calling the tuners liars
That or there is some kind of equipment irregularity;
The A/F ratios are almost identical in the SZ tune, in the CAT tune, the SZ A/F was all over.