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      11-22-2009, 10:17 AM   #86
Jettafanatic
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Drives: 135i
Join Date: Sep 2009
Location: Santa Barbara, CA

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Quote:
Originally Posted by Evice View Post
@jeremyc74

"you've got high velocity flow through a small tube there's going to be a pressure drop"

technically... pressure increases in the tube, not decreases(drops).
Actually... Pressure is inversely related to speed when it comes to tube diameters... Bernoulli, gotta love him... so Jeremy is correct... http://physicsed.buffalostate.edu/Wi.../bernoulli.gif

I had thought of building ( done it before for my race jetta using lexan plastic from baby incubator that had been discarded ) something very similar to what you guys came up with. There is no doubt that a closed system sucking air *efficiently* from outside of the engine compartment is a better solution ( in fact, that's essentially what the OEM airbox is, though the design could have been a lot better as it comes with inherent restrictions including the strange small squarish opening from the air filter compartment to the intake tubes... very small ). And I thnk you guys have done a proper job... It's because of people like you who keep trying to come up with "better" systems that we have a tuning market tiday ( the beauty of living in the US rather than Italy....
I applaud the design thought and effort though would make 2 suggestions:

-I would prefer an air filter with a built-in velocity stack ( i.e. Baker precision) or BmS style ( not sure if your stainless steels have that?).

-For those who already have a charge pipe and a strut bar (Mason) your design will not work... which is unfortunate... maybe a "shallower" box version should be available?

Appreciate 0