I was reading this article http://www.g2ic.com/tegtips/engine/2.html and this link here that shows pictures of it http://www.imagestation.com/album/?id=4290340545
It says that by flipping this valve it will cut down on the gas consumption and only casue a little bit of lagging.

anyone ever tried this before? or know how/if this would work?

 

That is a check valve. its supposed to be there for a reason and face a certain
direction for a reason.

That textthat was there was not very informative and his gains could just be
from driving less. he did not even bother stating gas mileage figures.

 

im puzzled by the guys instructions of how to do it
well in any case save a couple of bucks
Y!

 

It's a one-way valve. Allows air to flow one direction, not the other. All he does is turn it around.