MSD Coil replacement

rod locker said

Gee.......now I am all confused. My 318 has a new ballast resistor and ignition module.....and everything else electically is stock. I changed those just because. I haven't looked but am pretty sure car still has points. It is a 1974 model Duster. Haven't had the car long and was going to change the coil while changing the intake. But now I am not sure. Electircal work....and trouble shooting scare me to death. So now I don't know what to do.

Click to expand...

If you have a Mopar ECU, you don't have points, you have a magnetic pickup style distributor. :) I'd leave the coil alone if it's still working fine. If the 318 is stock, you wouldn't really see a gain anyway. If you plan on adding NOS or otherwise increasing cylinder pressure (horsepower), go ahead and add the coil but use their (MSD's) recommended ballast resistor and order a second one to keep in the glovebox. The nice thing about the Blaster 2 is that if you do upgrade to MSD's or another manufacterer's CDI box, the coil will be compatible and you can dump the ballast resistor. I hope this clears things up as Matt and I got into some pretty heavy theory.