The bog after coasting is back (well, actually, when I thought it was gone, I wasn't off of the throttle enough for it to appear, still have a rough idle as well). It bogs if I let off the throttle and for more than about 3 seconds.
I finally got some time to datalog the car. What I think (because I have no clue how to really interpret the graphs) I'm seeing is that when I go off throttle, the O2s either go erratic, or low or high, and the integrators start dropping sharply. Then when I get back on throttle, the RPMs don't increase until the integrators start coming up some. Also at cruise, the O2s are cycling only about once per second (thanks to Marc for pointing that out).
(Integrators, RPM and TPS % on top, and O2 voltages and map on bottom)
Bog 1:
Integrators dropping further the longer I'm off throttle:
Everytime you see the throttle being depressed here, the car was bogging until the integrators got back up to normal and the O2s started cycling again:
Cruise:
