Good news. The new O2 sensor works. Initial set up of the SCG-1 is ok, I'll be fiddling with adjustments to maximize performance. Thanks to Mitch for some clarification.
Yesterday was the first big drive since getting the car back, putting on ~200 miles. Not one issue. The car idled good, started up every time, cooling was good, oils temps maxed out at 90ºc (194ºf).
11059885_860564360704892_6387149033155747753_n by
Jason Gale, on Flickr
GaleForce 370z by
Jason Gale, on Flickr