Spec R

Why does the Honda s2000, Acura TSX, and a few other 4 cylinder powered cars have a dual exhaust setup stock then? And even though the accord v6 has 2 cylinder banks, they still combine in one exhaust stream through the middle of the car, then go back through 2 mufflers (of course there is increased exhaust and velocity, but i'm just bringing it up for reference purposes).

of course, with some s2000 aftermarket exhaust systems, they only use one muffler, but not all of them...

Spec R

oh yeah, by no means is this thread a defense statement (or offense for that matter) to anyone, it is merely just a wandering thought in my head, although i'm sure it has something technical to do with exhaust pulses, resonance, backpressure, efficiency, etc. on an engineering level.

qtiger

Either for purely style reasons, or weight reasons, or both.

With the S2K they might have needed some added weight in the back, or wanted to balance side to side. They also know that the average American things of roadsters as having dual exhaust.

Kai

Style. Americans tend to like it when expensive cars have dual exhaust, real or not.

TheOtherDave™

More often than not, it's marketing dictating to the engineers.

Spec R

i never thought of the weight factor for the s2k...it makes the most sense to me. 50/50 weight distribution probably has something to do with it.

as far as the other cars...i guess it is marketing and style.

TheOtherDave™

Considering that weight balance theory:
I can see how the L/R weight balance would be important, but what about inertial moment? On an FR roadster like the S2K, it seems like two big mufflers at the back are going to have a higher polar moment of inertia than say, a large pre-mufflier near the transmission, splitting into two exhausts with small mufflers at the rear. :dunno:

Just a thought.

silverDC4

yea it's a marketing thing....

KAUAI KANE

IMO as far as the s2000 is concerned it has to do abit of everything like every one said weight distribution, style(referring to the american style's), but not so much performance,:werd:

MrFatbooty

I have an alternate theory about the S2000 having dual mufflers.

The engineers obviously wanted as much exhaust flow as possible, however the car would be loud as all hell with a plain, single, free flowing muffler. Having a dual setup allows for enough noise reduction while not decreasing flow too much.

On the TSX I'd say it's mostly for style.