Thanks for the replies guys!
Steve,
I searched their forums and actually posted a thread there also. I found one guy in Serbia with an E30 316 who says he just connected the MJ tach out directly to the tach in at the cluster. I will be trying this tomorrow. According to the installation instructions this won't work, but it's worth a shot if it worked for this guys E30. As far as maps go, all the M10 maps I could find were for heavily modified engines, my engine is relatively stock.
John,
Yes, the Megajolt system uses the stock EDIS components. My email address is my FAQ username at gmail. A diagram would be a big help!