The ZX3 ran "Great" on the test ride. The engine light does "not" come on with code 171 (lean), no more rough idle, and no more hissing when the engine is shut down.
Appreciate the comments in this thread before & after first I posted.
Hope the Toyota Pickup heater hose will last much longer than the OEM hose. Time will tell, should put 1,000 miles on during the next two weeks.