New Problem: RMI tach no good.  According to my RMI engine monitor I have about 4300 RPM at 24 MAP.  At 29 MAP I still only have about 4500 RPM and at 35 MAP I am still at 4500 RPM static.  I dont buy it because it sure sounds different (faster).  So I have to install an accessory Tachometer....  Tracy, where was the Engine Monitor when I was building the pannel?  :-)    I still have holes in my mixture map as every now and then I pass through a hole and the mixture goes all haywire.

 

Like John mentioned, I used a pulse divider as well.  I couldn't get a reliable reading using the 12 pulse output.  I divide by 6 using a CMOS divider, which puts out pulses equivalent to a 4 cylider engine.  Most tachs will take that.  If you want I can look up the part number for the IC I used, but I think that it was a CD4060.