My first exhaust setup...
#16
Sparko makes a good point. Magnaflow mufflers are packed much tighter packed with rockwool and OEM isn't, its just a big 31" muffler. I would still say go for the 18" body, but start with the 24" body. The 5x11 oval case will absorb a heck of alot more volume than the 5x8 version. Being only 2"s longer wont kill down the output volume as much as the 5x11. I would say go for the 5x8x24. A part #12289 muffler is waiting for ya
#18
Update:
Well after ordering all my exhaust parts and having to wait a couple weeks to have them installed (Had to pay Uncle Sam first). I finally got everything in.
It's exactly what I wanted. No Drone with a little grunt. The only hint of a drone is when it's at about 17-18 hundred RPM and under just a slight acceleration.
It's a Magnaflow 5x8x24 SI/DO 3/2.5 with Corsa Dual Tips.
Also this is my first time creating a YouTube video.
Sorry for the crappy video, it's from my cheap a$$ little Aiptek camcorder and taken late today. Hope it gives an idea of the sound.
Here's the videos. If you go to YouTube you can see them in HD.
http://www.youtube.com/watch?v=j_khVW8u-gM
http://www.youtube.com/watch?v=vWOCkmyqvZw
http://www.youtube.com/watch?v=XDVhqaBw2Y4
http://www.youtube.com/watch?v=t329M7dtJKE
Well after ordering all my exhaust parts and having to wait a couple weeks to have them installed (Had to pay Uncle Sam first). I finally got everything in.
It's exactly what I wanted. No Drone with a little grunt. The only hint of a drone is when it's at about 17-18 hundred RPM and under just a slight acceleration.
It's a Magnaflow 5x8x24 SI/DO 3/2.5 with Corsa Dual Tips.
Also this is my first time creating a YouTube video.
Sorry for the crappy video, it's from my cheap a$$ little Aiptek camcorder and taken late today. Hope it gives an idea of the sound.
Here's the videos. If you go to YouTube you can see them in HD.
http://www.youtube.com/watch?v=j_khVW8u-gM
http://www.youtube.com/watch?v=vWOCkmyqvZw
http://www.youtube.com/watch?v=XDVhqaBw2Y4
http://www.youtube.com/watch?v=t329M7dtJKE
#20
#22
In jan 2005 they switched to a two cat design vs the original 4 cat design. So if your trucks build was Dec 2004 & prior, it had 4 cats.
For 2009, they added less noise resonating converters, these cats are about as good as the GM catalytic converters now, there will be less demand for hi-flow cat swaps in 2009+ cause the stock cats are nearly hi-flow as is, your video is clear evidence, a 24" Maqgnaflow sounding that loud?
And the muffler in the 2009s is straight through with offset chamber walls to deaden drone, but does not flow like a chambered muffler, flows, and sounds, like a good straight through. S therefore, a good sounding stock system nearly.