I think this video might be viral nonsense. The recall is for a fuel line crossover that cracks and causes fires. For exhaust to ignite, one would have to have a reason for an ignition within the tailpipe - an old lead sledder trick - and that would not happen with what the truck recall is for, and they are not even related. You might as well show the truck bed or the glove compartment shooting out flames. Also, the exhaust doesn't stay ignited, which indicates that the ignition point stops and starts based on the gas pedal? It is fun to watch but I am betting it is a bunch of goobers hooking up a dash spark switch.