The test signal could be a moot point by making sure the shift button needs held down before the shift relay is active. I'd reccomend this(AND an arming switch imo) no matter what on any system as there are too many mistakes in the pits, garages, dyno's etc. across the country by having uncontrolled systems. I run both an arming switch and a shift button that both need activated for my auto shift to work. My auto shift is then triggered by my tach output(non busa bike) and the cool thing for me on that bike is that my tach allows me to set each gear to a different triggering rpm(and record multiple runs inside the tach as well). This way my shifts can be set for each gear to retain max torque post shift for each gear. By arming the switch, launching(past any tire spin of course so it doesn't tirgger during tire spin), and then holding down the shift button the remainder of the run(or as wonted)... the tach can take over and perform the shifts at it's individual preset rpms. If I want to manually button shift, then I simply set the rpm limit lower and can trtigger it anytime I want. The above is just a safety thought... and we will certainly be obtaining our triggering components for the Busa from Greg when the time comes.
Todd