That first graph looks like a fmu set-up the way the afr dips drastically when it switches over to the larger lobes.

who's doing the tuning? I've never seen a graph look so chopy.

BTW usually rasing the vtec cross-over will result in a smoother transition.
When I was running a sfc/fmu/310's and stock cross-over I would lose about 15whp. I bumped my x-over up to about 6,000rpm and the transition looked like your second chart....I would only lose about 2hp...

regardless your afr looks like it can use some help still