Vortech says the timing control box is made by Split Second,
and a google search turned up this:

http://www.splitsec.com/

The label "FTC-3" on my black box must be "Fuel Timing Calibrator", um, three.

And I think there's some software to program it through that serial port...

"Engine Management Software - WindowsTM based software that controls the AIC Additional Injector, PSC Programmable Calibrator and FTC Fuel/Timing Calibrator families of products. "

MG

 

Wonder if anyone has the R4 software they mentioned...

 

Detailed information about this can be found about this unit here:
https://www.s2ki.com/forums/showthread.php?...&threadid=84206

Thanks for lighting the path Mecha!