Ok... I found something that actually looks like a cheap rip off of what I mentioned before. I did not, and do not think this works, but it is worth the laugh anyways.
eBay Motors: SAVE GAS +16% HP Honda Prelude/Passport 4+6cyl +31% MPG (item 230226966961 end time Oct-23-08 21:02:09 PDT)
Here is the description... it sounds good, or would to someone who didn't know better:
How does Velocity Tuner increase horsepower up to 16%?
The Velocity Tuner swirls the air in the intake tube much like a tornado. As a result, this allows the air
to move faster and more effectively around corners and bends. Think of it this way: when you drain a
bathtub, a whirlpool is created because it’s the fastest way for the water to go down the drain. The
concept is the same. The faster the air moves in your intake tract, the more power your car, truck or
SUV will have - it’s that simple.
How does Velocity Tuner increase fuel efficiency up to 31%?
The Velocity Tuner creates a mini-tornado which in turn creates finer particles of atomized fuel allowing
better flame proliferation for a more complete ignition in the combustion chamber. Your vehicles ECU
(computer) reads data through the O2 sensor then recognizes the change. In turn, it adjusts by cutting
surplus fuel delivery thereby resulting in better gas mileage.
I love the description... it "swirls the air".. it creates a "mini-tornado".. lol