Thanks Dave... I'm just having fun with it... I know on the old 6.0's it was a problem when you added the power mods to them but haven't heard of a lot of problems with the 6.4 Powerstroke. It's amazing what those things can do when you unleash them but at the same time it's not as amazing the cost of messing things up. That's why I was trying to get some info on them from people that have used them. Thanks Dave.