[s-cars] Stromung, worth it?

[CaptMagu at aol.com]

Chad

There is no doubting that 2  2.5 inch pipes have a greater area displacement
than 1  3 inch pipe. The flow issue invloves more than just the displacement.
In this case the surface area for these 2.5 inch pipes far excedes that of
the single 3 inch and this decreased friction allows the 3 inch pipe to come
out on top. This phenomena is known as head loss in the fluid world.

With this in mind, and given the sound my car makes on the dyno the 3 inch
Stromung is not adequate for the Happersize Speciale. Can you spell 4 inch?