This is what will happen.
NAWZ aka Nitrous Oxide is the heavy punch you need in your car to be king in the street racing scene. Thanks to the Fast & Furious movie series, it has become quite popular for those looking to get more power, really quick in their econo-box racer.
So what happens when you spray Nitrous Oxide into an engine on the dyno the wrong way? Well, there’s a lot of smoke and some banged up engine internals.
This video from MexicanRacingLeague, is intentional (for whatever reason) as they spray nitrous oxide directly into the air intake on a Chevy Cobalt SS on the dyno and do quite a bit of damage in the process to get some laughs.
Source: MexicanRacingLeague YouTube