Need help with Electronic Ignition

I have a 69 340 Dart Swinger. I put in a electronic Ingnition and i have been having problems with it. The car will start and run at an idle, but as soon as i try to give it gas it will not respond. I have recheck the timing, carb, orange ECU box and wiring. I even went as so far as to disconect everything and place the old distributor back to the way it was and it fire right up with no problems. Help please

joe