MSD Blaster SS help needed..

If you want to know about compatibility, you should look at what the orange box is designed to support or run (coil).

What ohm load does the orange box "prefer"? What load is it designed to tolerate?

I think the orange box is likely designed to tolerate a factory 3.2 ohm coil load at 12- 13 vdc. Factory type coil running at 1.8 ohm and factory type ballast running 1.4 ohms.

the blaster ss is .355 ohms which is way too low for the mopar box to run long term. It will probably melt the mopar box. You will probably need to run a ballast of about 2.6 - 2.7 ohms.

So, if your orange box is designed to operate with a total load of 3.2 ohms at 12 - 13 vdc, then setup your coil to be like that. Otherwise you will likely run into longevity issues with your ecu.

You can run that coil with an HEI module with a .1 or .2 ohm ballast as the HEI will tolerate .45 to .6 ohm coil.


I have both a 4 post and 2 post ballast but is this coil really not compatible with my set up ?

Thanks
ian.