uhhhh.....
Unless I am not seeing a point correctly in their tests.....
If you put an oven mitt over the end of the pipe instead of the magic air filter, I bet the gauge would jump up into the 20's, if it were mechanical it would wind the needle like a clock spring.
LMAO
It is measuring vacuum isn't it---not velocity by venturi effect. Yes, the venturi effect increases with velocity, that's how a carburetor works. But, it seems to me, he is measuring vacuum. We need for him to put a turbine in between the magic filter and the vacuum source--that would show velocity.
I suppose in his setup, if it were supplied a turbocharger upstream of the filter it would show a positive air pressure---and in his test, that would show it inferior to his vacuum cleaner/magic air filter holder test.
It would take a much more sophisticated flow bench than a 7th grade plexiglas project they had going to show venturi vacuum increases due to a velocity increase. Using an analogy of ground effects in race cars is amusing. My bro inlaw who is an aeronautical engineer would get quite a chuckle off this one.
Bent science in my opinion.
To increase velocity via his route would entail a huge air cleaner with a monumentally huge funnel shaped ram air intake be bolted to the front of his car, and drive 120 mph to see significant velocity increases.
442 Oldsmobiles used something like that. They had two large funnels under the front bumper with twin 4 inch hoses going to the air cleaner. I think it was more for cool air induction than ram air velocity increases though.
