It'* a myth. A marketing ploy for the mentally challenged ricers. It'* a MAJOR restriction to the natural flow and demand of your engine.

Yeah that was a pretty neat video. It showed the graphs of the dyno with and without the leaf blower.

I read somewhere yesterday that an M90 can pull 100,000 Watts (about 130 HP), so you can imagine how much good a 100 watt or so electric fan or 5 HP leafblower can do.

Ask yourself one question:

How many Bonnevilles on this Forum have you seen with it, and if you answer none, ask yourself why not?

he...he...heeeee.......I gotta go work on the flux capicitor for my new ionic drive idea.....and dig out the "fuel line magnets" I bought in the '60s that promised a 10 Hp boost

Because no one is as bored, is crazy enough, or has the mechanical inclination to hook up a home made leaf-blower contraption yet? :P