Has anyone peeled back a stock muffler and looked inside
 

I am cutting into my spare muffler in the next couple days but wanted to know if anyone has already done it?
:icon14:

PICS UP

too bad ur so far away i have a spare stock muffer for the autopsy.

It is currently under the knife will post up pics when done, and modified

are you going to gut it out and weld it back together?

yep, see what restriction is in there...

you sir, are a pioneer.

ha ha, just playing about

In for knowlege

scalpal?

*passes the scalpal*

in for results.

I'm very intrested.

subscribed :)

:) in for educational purposes.

Gut check, I'm down!

Should get pics tom morn, hope to get it on car for weekend, been out of action for two days with work ;-(

So you have pics of the inside AND after modification right? Wondering what you did to reduce the flow restriction, and of course how it sounds and gains/etc. Enough detail for us and you will get reps from me. :tup:

I will post up full detail when done dude NP

Im sure it is a chambered muffler and those are very restrictive but help keep the noise down.

Thats my guess too, I'm figuring a perforated inlet with fiber packing and then some chambers to cut out the noise. Probably a drop in tube size somewhere in there as well, but maybe not.. wait and see.

Pics for the pre gut, should sound good when this is gutted out, will weigh it and post sound clips, also return to dyno.
Enjoy my fellow Doctors.

http://i116.photobucket.com/albums/o...Z/IMG_6326.jpg
http://i116.photobucket.com/albums/o...Z/IMG_6325.jpg
http://i116.photobucket.com/albums/o...Z/IMG_6322.jpg
http://i116.photobucket.com/albums/o...Z/IMG_6324.jpg
http://i116.photobucket.com/albums/o...Z/IMG_6323.jpg
http://i116.photobucket.com/albums/o...Z/IMG_6327.jpg
http://i116.photobucket.com/albums/o...Z/IMG_6328.jpg

Nice! +1 for the pics.

Now I'm tempted to tear apart my OEM Nismo muffler.

that is one restrictive biatch.

Daleks Dont do that... I want one and we can do a deal....... ;-)

Zsteve , I can see a whole lot of peeps getting cuttin and welding...lol the dyno and videos will shwo up a lot I feel

If you are going to gut it out I would just do a 90 degree bend pipe from each intrance to its perspective exit and cut out the walls, may be drill a few holes in the new pipes.

Prob do just that, I may run it as an open chamber, not decided, will have to trial sound, need to get a plasma cutter set up ;-) good times

I would think that if you dont run a pipe for it then the air will just bounce around inside and you will still get some restriction from it and the flow inside would be all jumbled. But dont quote me on that.

Not sure, most of my smaller banger muffler where just 'open' can, we will see I guess, I dont mind playing with stuff

Haha, you beat me to this. I was going to eventually tackle gutting the stock muffler until I achieved the same sound as the washer mod. Gutted the stock muffler on the Evo, and that actually produced 5-10 WHP! :bowrofl:

There will be a bit of turbulence, but exhaust flow takes the path of least resistance, so it really won't matter much to overall flow.

Ill see how she runs, I did run it with open X pipes once and it was def quicker but dam, with test pipes, ultra loud

thx for the reps guys

Awesome!

You are always messin'. I bet the wife loves it now even more than just the test pipes.


I had to join the 370 family just to keep on your car.....

Yep. lol just get a bigger turbo on that Scoob so we can get >400 Wheel from her

Not what I expected.

I would weld in a straight pipe -- open chamber will probably result a lot of unwanted turbulence and you may very well lose power.

Also, it's gonna be really loud... you might want to pack steel wool or something like that around the straight pipe if you go that route to keep the sound down.

Its totally gutted now just running two 90's to connect inlet to outlet then welding up, pulled quite a lot of crap out of it, will weigh it in comparo to stocker, get vids pics tom prolly.

Welded in some elbows, man it was a biatch to cover back up, even on lowest setting the weld would just hole the muffler material, took an age but all sealed, I will have internal shots prior to sealing up when I get them emailed to me, I fitted this up to my vehicle, it sounds sick! , loud, zero rasp, at full tilt it is very screamy, just how I wanted it, as promised over the next week or so I will post up a vid and also visit the dyno, it has picked up some for sure.
Took some weights today also for info.

Stock muffler weight = 27.50 lbs
Cut up Muffler with iinternal 90's = 24.69lbs

2.81 lbs of crap removed, not massive but worth noting since I was doing this anyway.

Here is the resealed unit.
http://i116.photobucket.com/albums/o...Z/IMG_6334.jpg

Really happy with it presently, went out tonight to a couple car meets, good comments from my pal as I blasted past his Mustang lol ;-)

heard this tonight, its freaking loud but sounds really good imo

Looks like when I resealed up my Evo X muffler with a flux core welder :bowrofl: that was a bitch!

Nice work though. I can't wait for some good sound clips - this may be what we do to ours as well. I've yet to find a catback for this car that sounds good and retains a true stock-like look.

oh man, not the prettiest thing ever but its underneath the car so who gives a damn! I'd love to hear this thing in person! Excellent work, guaranteed that you're the first one to do this