Tach Issues with stock ECM

Thanks G, those are the same two options that I have found. I also found a link at Street & Performance on how to hook up the MSD & Dakota Digital setup, maybe it will help you find your error. I also talked with Chris at Hotwire, he said to set the SGI-8 to mutiply the signal X4, and set your tach for an 8 cyl.

http://www.hotrodlane.cc/ONLINETECH/HEMI%20tach.pdf