As far as I can tell theres the 6-Hemi Ignition Controller and the XV controler, They look the same, but the MSD controler is $50 cheaper.

What contronlers are you guys useing and why?

Did anyone buy a controler with out a tune in it? How hard was it to put a base tune, just to get the car running?

I have a 07 5.7L hemi with coil on plug, which wire harners do I need? Thanks Mike