About the MSD chinese built street fire coil, I can answer my own question. I drove the truck to the gym and then back home. Before I could pull it into the garage, it died and would restart briefly before dying again. The module and coil were very hot. The ballast is needed, even with the TFI type E coils, to prevent overheating apparently. Now I really need somebody to demytify why the HEI mod didn't work for me, because I am walking. I am not sure what all I am in for replacing, but I am not willing to buy the bulk of the DSII again. I'd rather just eat th cost of the DUI setup (which is what I was trying to accomplish more chaeply with the HEI module experiment). Thanks for any help.