FiTech EFI system

Well, thought it was working okay.. ran it last night and idled fine, went to drive it today and TACH Fluttered when power was turned and I could hear the coil trying to fire(clicking), but started okay
When I went to drive it , it went about 20 feet, then shut off. restarted all right, so I parked it .

For power using items under the hood, I only have the electric fuel pump in the FCC, the MSD 6AL and fitech throttle body getting power when I turn ignition on.

Soon as I get time, I am going to unhook the fuel pump line, power up and see if it gives an rpm signal.

I find it hard to understand why we should have to shield all the wires , all thne way back to the throttle body to avoid this signal noise.

Fitech emailed that my MSD CD box was the problem, yet it did the same thing when I was only using Fitech to drive the coil.?

Ken