Ray,
Do you know of the connector on the car for this? I have a 1991 and there is no connector, I am aware of, for this. Only to set it into "check" mode and display the DTC's by blinking the MIL. In the schematic in the 1991 NSX service manual, there is no connector listed.
Typically a "Honda" tool is listed in the service manual, but again I only have a 1991 manual.
Maybe this is available 1992-1994 some time??
Thanks,
LarryB