Need help with phantom break up

[93supercoupe]

Hey guys, whats up. Ive been helping a friend with his car. Its been having a break up in between shifts like crazy.

2.0l GSR
CP/crower billets
RLZ head
t3 6262
21psi = 560ish on 93oct.
93 EG hatch

Ever since the car was tuned in the begining of april, it would break up coming back from a shift. Its alot easier to describe while looking at a log but you would pull an entire gear, lift the throttle, shift, come back into the throttle and it would break up for a quick bit and clear up and go.

You can roll into any gear and pull the whole gear with out hiccup. Car runs amazing otherwise. It seems like a TIP in setting but no matter what we try, nothing makes a change to it.

So far we have tried
A different s300
dizzy
wires and plugs. cap and rotor
moving and adding good grounds
replaced the entire car wiring harness along with a virgin engine harness
and every setting we have tried in the tune has not made a difference.

It doesnt matter if its 10 psi or 20psi, same thing.

Its super easy to spot in the logs. These logs were taken on BRAND NEW pavement. Super smooth, no bumps, no tire spin. I say this because you will see the RPM gets a little crazy.

You will see it clearly at .0327s and again at .07s, but you can also see the whole RPM range, the graph is not smooth

I can see it goes pretty rich after the shift, possible issue? what should i be adjusting?

Any ideas, please fire away.

[crucian]

Looks to me that when the throttle is applied, the AFRs drop to the 14s at high RPM and WOT. Try getting the AFRs to mid 12s around that point and try again. Also looks like your VTEC transition isn't tuned right. The problem might be occurring when it drops out of VTEC and rapidly going back in. Try to get VTEC to stay enable instead of turning off while shifting.