3.5 inch cat back $130 dollars.

[NORCAL SS]

Guys i cut off the resonator on my escalade and left it turned down and replaced the main muffler with a magnaflow 12909. The stock exhaust is 3.5 inches from cat back so by far best way to spend your money.



muffler you can see thru


installed



NOTE--- you will need to get about 2 inches of straight 3.5 inch pipe. You can cut the portion before or after the resonator and weld that on the pipe coming into the muffler so everything will fit in.


And here goes the stock muffler you can't even see light thru it from other side





Now on these mufflers takes about 1 month to break in fully. So far the truck has got louder and no real noise inside. Sounds great!!!

Also I did notice a gain on hp when we stomped on the gas. My main concern also is that all the aftermarket cat back exhausts for these trucks are 3 inches and like 600-1000 dollars and stepping from 3.5 to 3 inch is not the best at all.

Save your money and make more power by doing this set up.


http://www.youtube.com/watch?v=I_E5417xFVo

 

[Flowmini98]

I like..just did something similar on my Tahoe and got to see the same restrictive factory muffler shots in person. Im very happy with the way mine turned out as well.

 

[westray]

Nice setup and money well spent

Looking to do the same thing

 

[quattrotman]

Did the exact same thing on my EXT and I'm loving it. Can't really understand why anyone would spend $500++ on a cat back when it's pretty much the same thing. Even the magnaflow cat back is big $$ and it is exactly this setup but comes with a tip.

 

[robdeniro0]

Tony i bought the 12909 muffler because it had the 3.5 in and out but i see the factory muffler is offset on both ends where the magnaflow has a center as well as an offset outlet, so this is not a exact swap. I would need to change the whole piping underneath? Oh i have the 10 denali by the way.

 

[NORCAL SS]

Did the exact same thing on my EXT and I'm loving it. Can't really understand why anyone would spend $500++ on a cat back when it's pretty much the same thing. Even the magnaflow cat back is big $$ and it is exactly this setup but comes with a tip.

yeah i know 500 for pipes that SMALLER than stock

Tony i bought the 12909 muffler because it had the 3.5 in and out but i see the factory muffler is offset on both ends where the magnaflow has a center as well as an offset outlet, so this is not a exact swap. I would need to change the whole piping underneath? Oh i have the 10 denali by the way.

Its a bolt in deal pretty much. You will need about 2 inches of the 3.5 pipe which you can get from when you cut the resonator off and you put the muffler at a angle like we did. i have a 2011 escalade and works fine.

 

[yukon denali 2007]

so i just cut 2 inches from one of the muffler sides to fit it directly?

good job man

 

[NORCAL SS]

Cut the oem muffler as close as you can to the entry/exit holes

cut the pipe before resonator and ditch resonator.

Trust me wont be loud

 

[metal4all6]

Tony i bought the 12909 muffler because it had the 3.5 in and out but i see the factory muffler is offset on both ends where the magnaflow has a center as well as an offset outlet, so this is not a exact swap. I would need to change the whole piping underneath? Oh i have the 10 denali by the way.

I ordered the same muffler, but quickly cancelled after I noticed the same issue with the offset. I wish this was posted a few months ago . I would have gone this route instead of the MBRP catback.

 

[NORCAL SS]

yeah guys dont waste your time. Its one step louder and for us is perfect. Im doing long tube headers for better performance/gas mileage im sure it will sound even better after that.