They had a flame throwing contest at one of the casino’s during Cruisin. I did not go to it but saw a very interesting setup on a rat rod type vehicle that was there. He had a set up of twin turbos driven by his exhaust but instead of dumping that into his engine he dumped it back into the exhaust no doubt with extra added fuel and a spark as it finally exited his pipes. It is the one in the below video shooting flames 30-40 ft into the air.

Flamethrowing

1949 Chevy Carry All
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1953 Chevy 5-window
"Frame off Restoration"
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Beginning to End Slideshow
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Please don't tell my wife how much this thing cost!