So in reading some other posts on the msd E-core ready to run distributors the hook-up is to connect blue and brown ballast wires together,and then just pull control box wire plug off? or do you leave it on? will it hurt anything? I tried the HEI stuff and even bought the little mount for bottom of distributor housing but noticed no diff(diagram on line)will try this with E-3 plugs but will probably come back to my re-curved stock distributor and chrome box.