Just adding this; If you can start the car without the choke when cold, then you are way too rich. Don't remove the choke cables, if you are set lean enough to make better power (but not burn up), you will need the choke to start the car.

Get rid of the EGT's as they are unreliable and work with o2 sensors to monitor the temps. Lean=power until too-lean=meltdown.

Tom Donnelly
ITS 240z