have u measured with a multi-meter what the signal actually is coming off the dizzy wire? If your trying to use that system. I would find out exactly what is being thrown off the dizzy. I would find out what the range is on the HEI. I dont know enough about why, or what your trying to do with this system. please enlighten me. I am more than willing to go crazy directions as long as I can get this damn thing running haha.