Basically, yes. The box was a very early version of the 685 that was proceeded by a number of improvements over the following years. The retarding of ignition timing will still be present but at a much higher RPM and in the 3 ro 4* range instead of 10 to 14*. There were many other bugs in this version that were also addressed by updating the revisions in the microprocessor. Dave did not elaborate on the details of the bugs.
