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Registered
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668 Posts
Discussion Starter #1
How could there possibly be any advantage to running a cold air intake thats bigger in diameter than the TB. I would think that there would be a bottle necking effect if you ran anything larger and you would see no gains or possibly a loss in power due to this resistence. Can someone with more knowledge please provide me with some insight.
 

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aka Mr Ryte on G20.net
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1,478 Posts
Well, that's part of it....

The science behind it is al ittle more complicated than that. Certain pipe diameters will be good for lowend to midrange(2.25" - 2.50") and certain pipe diameters will yield more top end for the SR20DE(2.75" - 3.00") due to a phenmona known as resonance.
Here's a start:
http://www.se-r.net/engine/cool_air_intake.html
http://www.geocities.com/n_dahi/ (look under cold air intakes)
 

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The Genesis
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3,169 Posts
the whole principle to a CAI is to get as much air in as possible in a way so it creates a vortex effect so the air spins thru the TB at a high velocity, creating HP
 

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Bitter Old Man
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2,623 Posts
Hokum.
 
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