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GM Performance Cat Back Exhaust Muffler

Rubyralph

By Rubyralph
in Engines & Drivetrain

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Largely Unknown Enthusiast

Largely Unknown

Posted
Posted

Thanks all for the info.  I had been wondering about both of these two GM optional exhausts.  As a side note only, I just yesterday had a muffler shop install a flow master 40 replica in place of the stock muffler (everything else stayed) and hate it.  They knew nothing about these trucks and did the most ham-fisted chop and weld job imaginable.  I went cheap.  Should have got the good one, and now have to decide whether to eat the cost of a better system (not sure of the flapper can be salvaged) or go with one of the GM cat backs mentioned above.  

 

I saw the cost of both the GM-Borla and Corsa systems is similar, so that made me stop and think about which one would be more desirable (like it fairly quiet most of the time). 

  • 1 month later...
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2014sierra-rich Enthusiast

2014sierra-rich

Posted
Posted

I bought a Borla Atak straight from Borla for my 2014 Sierra, have had it on for about 2 years and haven’t had a single complaint about it. Sounds great, never had a problem with drone or V4. It’s more expensive than most but 100% worth every extra dollar for sure.


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  • 3 months later...
alodawg26 Enthusiast

alodawg26

Posted
Posted

I just got type Borla Atak and I'm trying to decide if it's gonna be too loud for me. I considered the GM Performance Exhaust (Corsa), but found a deal on the Atak that I could not pass up. 

ChristopherDB Enthusiast

ChristopherDB

Posted
Posted

I just bought the GM performance exhaust from the Chevy accessories website. After tax and dealer install came out to $1,099.78 with coupon code LEGENDS. Can't wait to get it installed.

Dr Awesome Enthusiast

Dr Awesome

Posted
Posted
On 5/31/2018 at 10:07 PM, ChristopherDB said:

I just bought the GM performance exhaust from the Chevy accessories website. After tax and dealer install came out to $1,099.78 with coupon code LEGENDS. Can't wait to get it installed.

That's a nice coupon code!  I really want it, but I'm going to have to wait until next year, bought the truck in February and have already spent too much on accessories.  Hopefully their is a similar one down the road!

alodawg26 Enthusiast

alodawg26

Posted
Posted
On 12/21/2017 at 12:24 PM, CDNSS said:

At first almost too quiet but after some miles it changes a bit and is perfect 

 

How much did it change and after how many miles? I went up to the dealership today and listened to the GM Performance Exhaust (Corsa version) on a new Sierra 5.3L and barely noticed any difference between that and my stock exhaust. I want to like it, but I'm trying to justify spending a grand on an exhaust that I can barely hear. Thanks for your help!

ChristopherDB Enthusiast

ChristopherDB

Posted
Posted
5 hours ago, alodawg26 said:

How much did it change and after how many miles? I went up to the dealership today and listened to the GM Performance Exhaust (Corsa version) on a new Sierra 5.3L and barely noticed any difference between that and my stock exhaust. I want to like it, but I'm trying to justify spending a grand on an exhaust that I can barely hear. Thanks for your help!

This is disappointing to hear. I've never heard it in person but if it's not much of a difference I don't want to waste $1100. I got notification from the dealer that it is currently on backorder and they don't know when it will be available.

CDNSS Enthusiast

CDNSS

Posted
Posted

Been on my truck k a year now 2017 6.2 at idle nice rumble at cruise same as stock no drone but when you accelerate you definitely hear it if you want noise all the time not the system but pefect for me definitely not stock under acceleration Quality is excellent way better than Magnaflow system  I had on 2010 truck

alodawg26 Enthusiast

alodawg26

Posted
Posted
4 minutes ago, CDNSS said:

Been on my truck k a year now 2017 6.2 at idle nice rumble at cruise same as stock no drone but when you accelerate you definitely hear it if you want noise all the time not the system but pefect for me definitely not stock under acceleration Quality is excellent way better than Magnaflow system  I had on 2010 truck

Thanks. I bet it does sound nice on the 6.2 but for the 5.3, just didn't seem to have the punch I wanted to hear. It sounded really good and clean, just quieter than I expected. I'm sure it sounds good if you get on it with the 5.3. 

alodawg26 Enthusiast

alodawg26

Posted
Posted
20 minutes ago, ChristopherDB said:

This is disappointing to hear. I've never heard it in person but if it's not much of a difference I don't want to waste $1100. I got notification from the dealer that it is currently on backorder and they don't know when it will be available.

Yeah. I was a little disappointed as well. Sounded really good though, just a little tame for me. I am still curious how it sounds after it settles in. I'm sure it gets a touch louder, but unsure how much. If you don't want to drop 1100, they'll occasionally offer 15% off accessories. Just have to keep an eye out for it. Good luck!

SirenRed16 Senior Enthusiast

SirenRed16

Posted
Posted
Yeah. I was a little disappointed as well. Sounded really good though, just a little tame for me. I am still curious how it sounds after it settles in. I'm sure it gets a touch louder, but unsure how much. If you don't want to drop 1100, they'll occasionally offer 15% off accessories. Just have to keep an eye out for it. Good luck!
My guess is it won't get much louder than it already is. You can always pull if off the truck and sell it or have a muffler shop swap in a different muffler and sell the GM muffler.

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Crobinson16 Enthusiast

Crobinson16

Posted
Posted
12 hours ago, CDNSS said:

Been on my truck k a year now 2017 6.2 at idle nice rumble at cruise same as stock no drone but when you accelerate you definitely hear it if you want noise all the time not the system but pefect for me definitely not stock under acceleration Quality is excellent way better than Magnaflow system  I had on 2010 truck

Any chance you could take a sound clip , outside sound and inside the cab sound. Thanks

  • 2 weeks later...
Jchoi Enthusiast

Jchoi

Posted
Posted

Thanks for the info in this thread. I’m actually looking for that “slightly louder than stock” sound, so the Cora’s might be the way to go. As a family truck, I’d have to deal with the response of my wife with anything too loud. Ha. Sometimes I have to pick and choose my battles. Lol. What’s the best deal people have gotten on it?

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