You could as well mount a remotely triggered spark plug in the end of your exhaust, rev the engine a bit and fire it up! Some of the kids who think they have some fast cars over here (I'm talking about the golf gt's and so) do it like this to be, even for a slight moment of their lifes, the attraction on some meetings and gatherings!
Regarding the OP, I'm ashamed to say when I had my first scooby I looked into getting a 'flamer kit'. Never purchased one, did it the right way in the end with my second Impreza and soon realised it wasn't the flames I enjoyed, it was the pops and bangs on overrun I liked. After all, you can't usually see much of the flames anyway. However that car in the video is just OTT, and the owner a show off that seems desperate for attention? Why else would you park up and rev the valves off the car for over 2 mins?