Taner Halicioglu

Ok, so I know everyone is saying the 'sandblaster' sound is from the exhaust, but today I was barrelling past my work and a friend was outside, and when I got back he said "Damn, your car sounds evil with that fierce intake-sucking noise!"

So I'm wondering if it's all exhaust, or also some intake restriction...

has anyone done any REAL calculations on whether or not the stock snorkel is too restrictive or not?

Just trying to help my baby breathe better ;-)

-Taner

triada

I can't see a point where there would be too much of a restriction.....it's just a...pipe. I guess the 2 screws that hold it down cause some turbulance though!! =)

Help your baby breathe by: 1) Adding an exhaust 2) Get the AWE intake 3)....NACA DUCTS. =)<p>-Cheng
<a href="http://registry.audiworld.com/audi/registry/details.asp?car=5226"><img src="http://www.musicsend.com/myS4.jpg" border= "0"></a>

Taner Halicioglu

The intake snorkel, you HiG's!@!@ ;-)

triada

AAH WHO AM I KIDDING. =)

Yeah i guess it could have more SURFACE AREA to move MORE AIR into the intake...but i don't see much room for it....

NACA duct.....<p>-Cheng
<a href="http://registry.audiworld.com/audi/registry/details.asp?car=5226"><img src="http://www.musicsend.com/myS4.jpg" border= "0"></a>

Dogg

What the heck is an NACA duct?

RobC

<a href="http://www.connect.ab.ca/~barachj/car-dicn.htm">Click Here</a> for definition.<p><b>Robert Cheng</b>
<i>Brilliant Black, 6-spd, H&R Coilovers, GIAC, MTM Exhaust, UUC 20%</i>
<a href="http://rcheng.home.mindspring.com" target=" _"><img src="http://rcheng.home.mindspring.com/S4/Images/right_crop_150.jpg" border="0"></a>

NASA racer

simply dumping alot of air into a system for cooling is LESS efficient than a little, properly managed, air.

The NACA scoop uses Bernouli’s principal that a fluid’s pressure goes DOWN as it’s speed increases. If you design your cooling so the a small intake is expanded to a large exhaust, the low pressure behind the intake will create suction to keep the system flowing.

This is why I believe a good hood EXHAUST vent would do more for cooling the engine than putting any more air INTO the bay. As far as the intake for the engine, it would be beneficial as long as the mixture was able to adjust properly to the different pressure of the air.<p><img src="http://pictureposter.audiworld.com/AudiWorldPics/2000/carssmall4.jpg">
00 S4 tip
Silver/Onyx
GIAC ECU/tip “race” chip (14.4 in 100 degrees)
V1

frank

Good points

Jim De Arras

The original use, by An(other)drew Lee, was to describe the sound from the rear of the car, the restricted exhaust. That sound does go away with an exhaust upgrade. From the outside, it could've sound like a loud "suck", also.

Jim De Arras

You might check your snorkle inlet, perhaps it's collapsed, or not correctly installed.