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6.2L exhaust question


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Hey there,

 

I was wanted to add a bit more sound to my 2013 6.2L. I had the flowmaster 50 on my 2009 5.3L and want a similar sound. I had previously just done a muffler swap.

 

Question is, any idea what muffler I should get for my 6.2L? I never know which muffler model to get as some are offset, centre and different diameters. blah blah. Hoping people know what i need from their experience. :)

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You can just cut the resonator off, pipe size is 3.5" Sent from my Samsung GS4 using Xparent Red Tapatalk 2

How much of a drone will that create in the cabin?

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I'm glad some one asked that question because I was looking and wondering the same thing.

 

I have a CTS-V with an LS2. I junked the 2-in-2-out muffler and resonators and replaced with Flowmasters.

It sounds awesome at low speeds, but the loud pedal makes things vibrate and droan.

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None, I doubt it will create the sound level you are after, however I have never been behind my truck while driving.

If (hypothetically speaking) there is "no drone" when the resonator is removed, my question is "why would GM install a resonator in the first place?".

 

What then is the purpose of the resonator?

 

JMHO

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Call me retarded but I like the drone. (I don't listen to the radio) everything I've ever had has been to loud. Lmao in fact when I was born the family car I came home in was a 76 Monte Carlo with open headers- slept the whole way home. At least that's what I was told! But back to the topic. I've had flow masters and lately borlas. I also have a 2013 w/ 6.2 and I'm installing "true dual" exhaust with MBRP mufflers off my 2012 camaro I traded. I'll never get the $1200 back so I might as well use them on the new truck. Just need headers first.

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If (hypothetically speaking) there is "no drone" when the resonator is removed, my question is "why would GM install a resonator in the first place?".

 

What then is the purpose of the resonator?

 

JMHO

 

Good question

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  • 2 weeks later...

I have just installed duels on my 2012 Silverado, I love the sound, not sure if it has increased performance a whole lot but has seemed to help increase Gas mileage some (if I keep my foot out of it). I had the 3rd cat removed along with the resonator and had 2.5" pipes ran to (2) seperate Magnaflows (16") then out to back behind rear tires on each side, also had an X-Pipe installed to smooth out the whole deal, sounds excellant and roars when you get on it. No codes or odd problems and sound is a bit louder but minus the poping sound I had before with just a Magnaflow installed on OEM 3.5" exhaust.

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  • 1 month later...

OK I've gone through a lot of pain with my 6.2L 2010 Silverado exhaust, hopefully this will help some of you avoid the same thing...

 

Bought the truck used with about 26,000 miles on it in July. It had Dynatech long tubes, what looks like Dynatech free flow cats, and a Flowmaster (not sure what series) single in-dual out setup. Between about 1500-2000 rpm, there is a low booming hum in the cab and my wife and kids hate it. I like a good exhaust note but for a daily driver the boom was annoying.

 

So I bought a Magnaflow 15121 cat-back. Magnaflow lists this for 2011+ Silverados, and for some reason the 2010 had a different mounting flange between the cats and the exhaust, so I cut off the Flowmasters (which had been stepped down from 3.5" to 3.0") just behind the flex pipe and also cut the flex pipe off the Magnaflow system. Then I was able to butt-clamp the Magnaflow to the factory 3.5" pipe using the factory flex pipe. Well it sounded different than the Flowmaster, more boomy and less rumbly, and still annoying from 1500-2000 (which is pretty much the most used rpm range for my drive to work).

 

I read about resonators (Magnaflow puts them on their Denali 6.2 systems but not this Silverado 6.2 system) and looked for one that would fit. There aren't many options for 3.5" piping and I also had space limitations. Vibrant Performance makes a 17970 resonator that is 18" long, and Magnaflow makes a 14160 that is 12" long. I emailed Magnaflow and they said the 14160 would act like a resonator so I bought one. Had to cut slits in the inlets/outlets so I could use a band clamp but got it installed feeding directly into the muffler (location recommended to me by Vibrant's tech dept). It made no difference. So I bought the longer Vibrant resonator and after 3 hours of trimming the ends of the muffler and pipes to make it fit, I got it installed. AND IT MADE NO DIFFERNCE EITHER.

 

So now I am frustrated and losing money fast. I just want to be able to drive this thing without the booming noise. It's not loud, it just sounds like the cab is a big 55 gallon drum. I could go with a stock exhaust (had a 2009 6.2L and it sounded great for stock) but those are $700+. Could go with a Corsa cat-back touring, which I have seen many great reviews about as far as cab noise, but it's $1000+. Could go with a Flowmaster 50 series big block, it will bolt right into the space of the Magnaflow 22 x 5 x 11 muffler, but it's aluminized and I want stainless. Not sure what to do so any help would be appreciated. Thanks.

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Mikepol2, I had the dynatech LT's and HF CATs on my last truck with a 3.5" MBRP cat back and had the drone around the same rpm range. I did switch it out for the Corsa (touring) and problem solved. It maybe a little more money up front but it is well worth it

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OK I've gone through a lot of pain with my 6.2L 2010 Silverado exhaust, hopefully this will help some of you avoid the same thing...

 

Bought the truck used with about 26,000 miles on it in July. It had Dynatech long tubes, what looks like Dynatech free flow cats, and a Flowmaster (not sure what series) single in-dual out setup. Between about 1500-2000 rpm, there is a low booming hum in the cab and my wife and kids hate it. I like a good exhaust note but for a daily driver the boom was annoying.

 

So I bought a Magnaflow 15121 cat-back. Magnaflow lists this for 2011+ Silverados, and for some reason the 2010 had a different mounting flange between the cats and the exhaust, so I cut off the Flowmasters (which had been stepped down from 3.5" to 3.0") just behind the flex pipe and also cut the flex pipe off the Magnaflow system. Then I was able to butt-clamp the Magnaflow to the factory 3.5" pipe using the factory flex pipe. Well it sounded different than the Flowmaster, more boomy and less rumbly, and still annoying from 1500-2000 (which is pretty much the most used rpm range for my drive to work).

 

I read about resonators (Magnaflow puts them on their Denali 6.2 systems but not this Silverado 6.2 system) and looked for one that would fit. There aren't many options for 3.5" piping and I also had space limitations. Vibrant Performance makes a 17970 resonator that is 18" long, and Magnaflow makes a 14160 that is 12" long. I emailed Magnaflow and they said the 14160 would act like a resonator so I bought one. Had to cut slits in the inlets/outlets so I could use a band clamp but got it installed feeding directly into the muffler (location recommended to me by Vibrant's tech dept). It made no difference. So I bought the longer Vibrant resonator and after 3 hours of trimming the ends of the muffler and pipes to make it fit, I got it installed. AND IT MADE NO DIFFERNCE EITHER.

 

So now I am frustrated and losing money fast. I just want to be able to drive this thing without the booming noise. It's not loud, it just sounds like the cab is a big 55 gallon drum. I could go with a stock exhaust (had a 2009 6.2L and it sounded great for stock) but those are $700+. Could go with a Corsa cat-back touring, which I have seen many great reviews about as far as cab noise, but it's $1000+. Could go with a Flowmaster 50 series big block, it will bolt right into the space of the Magnaflow 22 x 5 x 11 muffler, but it's aluminized and I want stainless. Not sure what to do so any help would be appreciated. Thanks.

 

My first thought while reading was that you should buy the stock system. Sounds like it would fit what your looking for. All I did to my stock exhaust was put a 5" tip on, and it changed the tone somewhat, and I think it's perfect now. I would either get the Corsa system or the stock system if it were me...

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Thanks for the response guys. One thing I forgot to mention is that when it's booming in the cab, I can feel the floor vibrating through my feet. Is that normal with headers? Or would changing the exhaust make the header/cat vibration disappear?

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