quattro digest, Vol 1 #3182 - 16 msgs

[Huw Powell]

> > Dual 3" is some serious exh, I can't ever imagine needing that on an Audi, esp. a 5 cylinder...no, single 3" is what I'm referring to.
>
> Ok, cool.  So, the stock exhaust is 2.125" dia pipes (x2) right?

no...

>  The Stebro is
> 2.5" dia (x2) pipes.  So total areas:
>
> Stock: (2.125/2)^2 x 3.14 = 3.55  error: x 2 = 7.1 sq.in.
> Stebro: (2.5/2)^2 x 3.14 = 4.91   error: x 2  = 9.82 sq.in.
> 3":     (3.0/2)^2 x 3.14 = 7.1 sq.in
>
> So the single 3" system is on par with the stock system, as far as total area
> goes.  If I did my math right, and there is no guarantees there.

why did the 2.125 and 2.5" systems get doubled?? what 5 cyl Audi has
dual exhausts?

What you've shown, is that the 3" pipe is double the area of stock, if
stock is 2.125".

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/