Not sure that this is not a doctored video, but worth watching anyway:
During the regeneration cycle for the diesel particulate filter, apparently some open flame may exit the exhaust pipe!!! Ford has a TSB out to modify the computer program that causes this. There has been a delay in selling new 6.4s until they have the software change, plus any new ones out have to be brought in for the change.
Rumors of this, plus the other extra emissions addons prompted me to just buy a new '07 F350 DRW for the 36TK3 I just acquired.
Ford has a beautiful new truck, then this. Cannot help sales in the long run.