The folks at MSD suggested I tie into the Fast harness in the wires and then they both will read the same. I sure don't feel like cutting up these harnesses only to find out you cant cut the wires. this is really got me lost.
his second suggestion is to zero out the values in the MSD box and save them that way. I am a few days away from trying to start this thing so I can still do some research on this. I am just not sure about cutting the harness wires for anything like this.

Any guidance is appreciated.