Sylvia

[ZachTullier]

sound clip coming soon. im trying to let it break in some. it's sounding better and better each day.


in other news. here is a rolling clip.

http://www.youtube.com/watch?v=qlMXVq38r_w&feature=plcp

 

[Preloader]

I noticed on the first day that I installed the DDMW exhaust and high flow 2nd cat, that it sounded farty under WOT.
After that day it has sounded soooooo much better and I'm so glad the fartyness was just that first day.

Why is that? What is "breaking in"? It's not like mechanical/moving parts.

 

[ZachTullier]

the fibers in the muffler when you usually get a new exhaust break down and it sounds a little different.

 

[Preloader]

But I'm not running a muff or res. Must've been the high flow cat. Lots of fibers in those things I presume.

 

[ThatTmoGuy]

Maybe it was just a brain fart?

 

[007CobaltLS]

EDIT, Nevermind...no muffler...lol.

The fiberglass packing that is stuffed into the muffler case is soaked in a varnish or hair spray like substance.
This hair spray like substance is used to help make handling during the manufacturing process easier and safer.

It makes handling easier because the fiberglass strands stick together and conglomerate so fiberglass particles don't go flying all over the place during the manufacturing process.

When you drive your car, the varnish like substance is burned off the fiberglass and all the fibers become free from each other and become better able to attenuate sound waves.

A break in will only make the muffler quieter... not louder.

 

[007CobaltLS]

And break-in for an exhaust can be the equivalent of about 1000 miles drive time.

 

[$ub$onic]

Sadly

 

[HareBrained]

But I'm not running a muff or res. Must've been the high flow cat. Lots of fibers in those things I presume.

Actually, the cat is a ceramic honeycomb-like substrate. It tries to provide a large surface area for the gases to pass over, catalyzing the NO and CO into NO2 and CO2. And it does change over time. IDK for certain, but it may have an initial coating to ensure it doesn't lose effectiveness prior to install.

 

[ZachTullier]

EDIT, Nevermind...no muffler...lol.

The fiberglass packing that is stuffed into the muffler case is soaked in a varnish or hair spray like substance.
This hair spray like substance is used to help make handling during the manufacturing process easier and safer.

It makes handling easier because the fiberglass strands stick together and conglomerate so fiberglass particles don't go flying all over the place during the manufacturing process.

When you drive your car, the varnish like substance is burned off the fiberglass and all the fibers become free from each other and become better able to attenuate sound waves.

A break in will only make the muffler quieter... not louder.

Very good explanation cobalt.

 

[ZachTullier]

sound clip of the Flowmaster dBx Cat-Back

Chevy Sonic 1.8 with Flowmaster dBx Cat back - YouTube

 

[$ub$onic]

That's a good sound. I like it. I'll stick with my deep magnaflow though

 

[ZachTullier]

That's a good sound. I like it. I'll stick with my deep magnaflow though

thanks man. do you have a link to yours?

 

[rdss]

Do you have anything other than the cat back? Test pipe, down pipe?

 

[ZachTullier]

Do you have anything other than the cat back? Test pipe, down pipe?

nope. just the cat back system

 

[$ub$onic]

thanks man. do you have a link to yours?

I have a bad video up right now I will be posting a new one here in a day or so when its done raining

 

[rdss]

I'm wondering if it will get more raspy when you go with a test pipe. Sounds pretty good though.

 

[ZachTullier]

I don't plan on putting in a test pipe but the exhaust sounds better in person tho.

 

[rdss]

I could only imagine. The videos on YouTube never do any exhaust an justice.

 

[ZachTullier]

I don't plan on putting in a test pipe but the exhaust sounds better in person tho.