[Bill Baer]

My interpretation of the rule book is the same as yours and I discussed this with the manufacture at the PRI show more than a year ago and they claimed it was indeed legal. But keep in mind I believe these are the same guys that developed traction control and May have had something to do with the development of the matty box?
If I saw some one using it in super class racing, I would point it out the track officials and quote the rule book as obviously anyone using one is not using just visual reference to stage by.
MSD makes a digital ignition box that will will do the same thing for turbo cars.