Austin (Omegabenz) sent me a copy of a 1992 article on the Renntech E600 conversion. Interestingly, Fehyl suggested their best launches were obtained by activating the "snow chain" switch which disables the ASR until about 20mph.
I've tried it out, starting from 1st gear, and it does allow a few seconds of wheelspin before everything hooks up. Strangely, when I looked in the rearview mirror, traffic was waaaaaay behind!