Anders,
It's a supercharger boost is relevant to engine speed, boost makes torque , full 10 psi isnt seen until 7200 rpm but it makes a nice car no big torque curve to un settle the rear tyres , easy to drive very responsive not like a turbo car.
All temps are goods water temperature is around 90 deg's under load on the dyno , oil temps are good no hot turbo's to raise the oil temp. AFR's are spot on for a S/C, running down into the low 11's at high rpm for safety and motor longtivity.
Remember this is a totally stock motor , so i think it is an awesome conversion the HR and also the VHR (370Z motor) are built for F/I.
I have driven a 370Z fitted with a GTM stage 1 turbo kit running around 480bhp at the rear wheel with a stock motor around 400lb/ft torque and that car was awesome as well , Nissan have stepped back up to the door with building proper motors.