of all the retarded things.
You dont have to create boost to gain horsepower. an engine is essentially a pump, you remove the air filter you are making the job easier, but there is still a slight vacume in the intake when compared to ambiant air pressure, when gasses flow the pressure drops, nothing amazing.
The gains from that are because the leaf blower is doing exactly what it was designed to do, flow air, its flowing more air than the engine is pulling on its own, therefor you have an over abundance of air, no vacume, noboost, simply more air because you removed the vacume. more air means more power, and because the engine isnt having to pull harder to get this extra air your not loosing power from the sucking action of the downward travleing piston.
there is no boost being created there, the intake was not sealed off to the air exaust of the leaf blower. any excess pressure would have flown right back out of the intake.
so to reidderate what i am saying, you are not creating boost, you are making flow easier.
Electric fans placed inside the intake, however, will not show any performance gains in the long run. they will run off of the alternator, the alternator gets its energy from the engine, at a rather low efficency in most cases.
in order for one to work you would have to have a storage of batteries which would be charged from the alternator. then when you wanted the extra flow the circut of the fan would have to be completely isolated from the alternator, just drawing from the batteries, and would only run untill the batteries voltage began to drop. and the power required to turn the fan to create the desired flow would be quite a bit, meaning if you wanted boost for any legitamit period of time you would need several deep cycle batteries. which is weighing your car down. and when you are finished you wil be loosing power agian because your batteries would go back to being charged from the alternator creating a greater load on the alternator which, in turn, creates a greater load on the engine.