Holley sniper
For my FiTech I used the ign wire at the ballast to trigger a relay for my main power to the ECU directly from the battery.
I made a little mini-harness with blade connectors to bypass the ballast and since my ECU controls timing I also removed the harness for the ignition box.
If your battery drops to 9v while cranking, your battery is likey shot or too small.