No spark HELP!

Since you have power going to the + side of the coil and the ECU, you can eliminate the ballast and the + primary circuit. From there, I would connect a test lamp to the negative post of the coil and check for a pulsing light. If the lamp pulses, your distributor and ECU is o.k... if the lamp does not pulse, you have a problem with your distributor (already replaced), the ECU, or the primary wiring from the distributor to the ECU or from the ECU to the coil. Also, make sure that your pick-up coil gap is .008"