Dyno run gone wrong for a 6.0 Powerstroke

According to the person who posted this video on YouTube, the center yolk blew out and broke the yolk flange on the piston, and knocked the flex pipe off the stack. Apparently brand new u-joints were put in it the day before, and there was a weak spot on the center yolk, where it blew apart.

Oh, and at :44, that was the hub cap flying off the rear wheel.

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