FAIL right out of the package.
That’s too bad. A shame actually.
Recently I switched from HEI back to FBO box and coil/ distributor. HEI have been failing- I went thru 3 in 2 weeks. Double checked all my voltages, grounds, grease and heat sink. All was good. Even the pick up module in the distributor. SN: 3 named brands all made in CHY-na.