3" vs. 2.5", etc.

[ricematthews]

(snip)
>Ok, cool.  So, the stock exhaust is 2.125" dia pipes (x2) right?  >The
Stebro is
>2.5" dia (x2) pipes.  So total areas:

>Stock: (2.125/2)^2 x 3.14 = 3.55 x 2 = 7.1 sq.in.
>Stebro: (2.5/2)^2 x 3.14 = 4.91 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.

True, but you also need to consider that the single 3" pipe will have a much
smaller surface area than the dual 2.125, so the friction losses will be
less (in the 3").

-Mark Rice