Jeffvette

Alright, in the search for possibly making the system into a 3" system since the jerkwads won't make one..... I have dissected a muffler to check it out.

Taking a plasma cutter and cutting it open




Cut open. You can clearly see the outboard tip has no direct flow for it to function. There looks to be a glasspack or similar system for the "flowing" pipe. It seems to me to be more of a noise cancellation system.



This is where the outboard tip gets it's small amount of airflow from. There is a small gap of maybe 1/4 inch at most for air to come through and go to the other tip. Not large enough in my opinion. But it still does get airflow. I wound up cutting the section out to gain airflow for the outboard tip.




Backside of the muffler. This is a small diamter tube that is present coming into the muffler from the straight piece.




More to come later

Thanks to Tom Wong for the work.

FoolCrzy

Thanks for the pics..... Looks like a project that I would do.

scorp508

Well that will finally shut up all those that tried saying the outboard tip is 100% NON-functional.

ShawnZR-1

This is going to get interesting!

ShawnZR-1

...and looking at the construction, what about the people that have "punched" the outer tip through? Would it make any difference at all?

dndrsn

I'd like to see it cut crosswise. My understanding was that Corsa mufflers were unrestricted, that the inboard pipe goes straight thru.

Jeffvette

It is unrestricted. It just has some slots cut in it.

The outboard tip is functional. You hold you hand over the straight pipe and seal it off, air flow comes out of the dummy tip.

By punching out the outboard tip, the sound went just a little bit deeper. I was not able to verify any resonance as this muffler was tweeked from a roll over accident and wouldn't bolt up in the stock location.

More to come.

eschoendorff

Perfusion

Interesting...

jrp

Gonna do the resonator, too?

VR'92

Cool! That a bunch of money you just cut open!

I can hear the Corsa hater express train a comin!!

bogus

they appeared to be damaged... so why not!

The idea behind the outer tip isn't so much to be a passage, as a pressure release.

The system does do sound cancellation. The pulse comes in, enters the chamber, bounces back, killing the next incoming pulse.

When you floor it, the air moves too fast to enter that chamber.

VenkmanP

This is cool. Should be posted in tech tips so we don't lose it.

Strick

Here is a shot of the inside of a B&B resonator. I would assume the Corsa resonator would be similar.

Nathan Plemons

At least it settles the dummy tip argument once and for all. The majority of the exhaust obviously still comes out of the main tip and there isn't anything that "opens up" at wide open throttle or any of the other silly theories.

Strick

Looking at that muffler, couldn't Corsa make it a lot smaller and save a lot of material?

bogus

my guess? the chamber size has something to do with the noise cancellation.

_twisted_

My guess is, if it was smaller they would have a harder time justifying the $$

Steve85

Size is probably just to retain a stock look.

As far as a 3" system, I discussed this with them about year ago and the suggestion was to use the Viper system

MYCoupe

The Corsa resonator is actually smooth w/ nothing sticking out into the tube. I had to look twice to see that it actually has a few openings that lead into the outer (bigger) section.