MSD Ignition Controler

[pvt.Tadpol xj]

O.K. here's another question for today.? What is a MSD Ign. Controller for? I mean to say what will it do...?

[4.3LXJ]

They have several types and purposes. But basically you get a hotter spark and multiple firings in each cylinder to cut down on misses. Check Summit Racing, they have a ton of them.