Catback performance exhaust - review

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ljn21

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July 8th - Update on the GM/Borla. I just finished a 2,500 mile road trip. It has an awful drone from 66'ish to 77'ish on the freeway when the motor is under light load. It may be tolerable if its a flat road with no wind or downhill....its unpleasant. It'll go away if it kicks down a gear but a slight hill creates that deep wha-wha-wha noise, it's sooo irritating. I'm surprised my wife hasn't complained.
Again, 78mph and above, it goes away and is silent at 80-81 which most of the trip was. Below that, has a nice rumble. Live and learn, last time I buy a Borla system, I've been burnt twice now.

I stand by the don't purchase opinion if your taking road trips.
Strange that our experiences are opposite, I don’t have any drone at all, at any rpm or speed including on the highway/up incline. When I first had it installed I thought I did have a drone but I crawled under to look at a few things and found that the exhaust had come loose at the connection point forward of the suitcase muffler and it was rubbing on a crossmember, I tightened and adjusted it off the cross member and it went away and haven’t had an issues since. My wife still thinks it’s to loud in the city, I think it’s a perfect, more muscular tone but it’s her car so I just swapped back to the stock exhaust and she’s happy again. Will be listing my performance exhaust for sale soon.
 

Roushja1

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That’s what I just did, swapped out my stock muffler for borla pro xs muffler on my 22’ Silverado with 5.3, $200 into the whole thing. Gives a little extra rumble but still quiet.
No drone with this? Looking to spice up the wife’s 21 z71 a little
 

Banks22

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No drone with this? Looking to spice up the wife’s 21 z71 a little
I have no drone that I notice, I also do not have AFM with my new 22 Silverado, it did not come with it. As I’ve heard the flapper valve (which I removed with the new muffler) stops drone when the AFM kicks on.
 
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H1Chester

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Question for you guys. I have been watching this thread and youtube videos of the Corsa, Borla and Carven exhausts.

Do we have a 3rd catalytic converter? Did you remove it?
 

rdhogg

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Question for you guys. I have been watching this thread and youtube videos of the Corsa, Borla and Carven exhausts.

Do we have a 3rd catalytic converter? Did you remove it?
Looks like a third small can just down stream from the main cats but I did not remove it and have not researched what the heck it was for . Sorry that is all I know
 

2022

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Corsa Is the only exhaust I ever buy for my cars. Zero drone.
 

Garth Knight

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Are there different types of Corsa exhausts for the Tahoe? I've seen people refer to a sport edition etc. Was considering getting one.
 

91RS

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Corsa has three sound levels: Touring, Sport, and Xtreme. The Sport is the most popular sound level. The touring is generally as quiet or quieter than the stock exhaust and generally people don't want just a sound change so this is the least popular offering and they have discontinued selling Touring for a lot of vehicles. The Touring was a great option if you needed/wanted long tube headers but didn't want it super loud. The Xtreme they really only offer for stuff like Mustangs, Corvettes, etc.
 

66 Galaxie

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Any review updates on any of the cat back exhausts for Tahoe/Yukon?
Borla?
Corsa?
Magnaflow?

The 6.2 needs more sound with no drone.
 

91RS

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Corsa is your option for no drone. Borla has a little drone. I haven’t had Magnaflow in 15 years because I don’t like their sound so I can’t comment on drone.
 
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