more exhaust

[auditude at get.net]

OK.  I can understand that there can be too large of an exhaust for our turbo cars.  I
don't know that the "too large" size is larger than 2.5", but it's some size.

But how about the Stebro muffler design?  Is there any disadvantage to having a
large open chamber with pipes leading into and out of it?

I had always thought that it would be less efficient to have the gases expand and
then have to funnel out the exit hole.  I understand laminar flow (that it exists), so
perhaps the gas still makes it's way efficiently out of the muffler.  Perhaps only the
gas inline with the entrance and exit really moves, while the surrounding gas is more
ambient, or perhaps "rolling" as the exhaust flows through.

And is there still a reason for a larger downpipe if the stock exhaust is close to the
optimal size?  I'm wondering what the best bang for the buck would be.  For a
5kcstq, for example.

I'm thinking high-flow cat, remove middle muffler (or replace with a resonator of some
sort) and use either the stock rear or and aftermarket muffler.  A step up would be to
replace the piping with the size of your choosing, such as 2.5" to keep costs down.

That NSX exhaust theory page that was posted here mentions the difference
between a real resonator (hemholtz type?) and the glasspacks we usually call
resonators.  Does anyone know where you can get "real" resonators?

Thanks,

Ken