6-Hemi Ignition Controller for 5.7L Hemi and tune?

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

I went to MSD website and they have the two wiring harnesses you need. I thought I read they have a base program that can be changed with a laptop. I do not think they use O2, so air/fuel may be hard to adjust. I think the programming is just for rev limit, start retard, and timing....not 100% though.

I am going to use this soon for my own project, anyone with experience. please chime in...

mike.
just bring it y the shop and have james tune it. you know thats the only real way here. run it on the dyno. its not that expensive.

steve