I dont run any ballast with my Accel super coil as I run a full 12 volts to it. I run the orange MP ECU box and have been running it like this almost 2 years. I used to run a .75 ballast but I read an article and heard a few say they dont run any ballast and have been fine. So I thought for the heck of it I would try it. I carry a spare coil , ECU and ballast as I figured if anything burns out I would hook the ballast back up and replace the part. But after running the eng for over a 1/2 hr the coil was still nice and cool. It does not get hot at all and neither does the ECU. So it gives me a hotter spark if needed and seems to work great with the Accel super coil. Course it may not work with all coils but I have been running mine like this for almost 2 years with no trouble ever. I just bypassed the ballast and left it on the firewall in case I wanted to hook it back up but I do not plan to hook it back up. Ron