KR, or rich.
I doubt KR if the motor is flowing well (8 psi).
I see 7 psi through most of the gear on a 3.4 post intercooler.
High compression though.
OP: Can you post a print out of the dyno?
NVM, read your OP more, if you have a N* TB, you NEED to have your maf file changed to match that of the MAF you're running. Though conventional logic would suggest if you ran an LQ4 maf with the stock table you'd run lean as can be.
Same thing can result though, lack of power.