"I can pull the high side chip out of two step and the "miss" goes away."
72cudaracer I have a msd digital 7 and I could try and pull the high side out of my 2 step to see if it goes away like yours did but if it does that would probably indicate that something was wrong with the msd box.I also have my 2 step at 4500 and the problem occurs closer to my shift point(6500 rpm) I have already replaced it (box)thinking it could be bad and unless I have 2 bad boxes that probably is not my problem?
I am probably going to replace the tach to see if it fixes it! It will be relatively cheap compared to what I have already done so far!
The fact that others have had similar problems leads me to believe this could be IT!
Thanks Mike
p.s. The only other thing I have not replaced is my linelock button on my shifter.It is pretty old and I suppose that when I shift it could be making slight contact and activating my burnout rev limiter for that fraction of a second.