[GTS/GTR G4 PNP issues]

Have you setup the open loop idle table before enabling closed loop?

[Wideband o2 for a link G4 storm]

I ground my LC1 installs to the engine block, they seem to read within .1 or .2 of an AFR compared to the lab grade sensors at the dyno I use.  The LC1 sensors get mounted in the dump pipe, the dyno sensor is in a clamp in the rear muffler after the cat.

[G4 pin Crip tool]

from my research they're AMP Super Seal connectors, info can be found here: http://catalog.tycoelectronics.com/TE/bin/TE.Connect?C=1&M=BYPN&TCPN=4-1437290-1&RQPN=4-1437290-1

They're a pain in the neck to get all the pins lined back up for assembly if you take the connector apart to remove not-required wires.