Recommendations for quiet muffler for custom exhaust

[Marshall 008]

I’m planning to have a custom high clearance exhaust made for my 2008 Tahoe Z71. I’m looking for something similar to the magnaflow overland series systems.
I want the exhaust to be quiet like stock or at least quiet at idle and driving. Don’t mind a little noise while flooring it but with manners. It will be from the Y-pipe back. Going to use V-band clamps and stainless tubing and resonators to keep the drone out.

Thanks in advance for any input.

 

[j91z28d1]

do you care about all out hp? if not these seem to go a long way to keeping an ls quiet. I have a hybrid and it's got what they call a adaptive valve in the exhaust. gm started adding them to the normal trucks the next Gen up. also seen some stock mufflers cut open and these are inside. it's just a spring loaded valve in a pipe.

mine has the normal muffler and normal after axle resonator. between the 2 is one of these and it's dead quiet exhaust wise anywhere under like 3k rpm. you hear injector tick over exhaust at idle haha. which is good, cause these trucks have what is kinda a cvt tranny, so they spend a lot of time at one rpm while mph is going up from the tranny using motors and planetarys to change ratios. it would be super annoying if you heard the exhaust droning away at one tone. even cvt cars had to have fake gear changes programed in.


with it idling you can open it by hand it definitely tell it's doing a lot to kill the noise. what it does to up? I honestly don't know. all the new trucks seem to make good power thou.

https://bobistheoilguy.com/forums/threads/flapper-valve-in-gm-truck-exhaust.293565/#:~:text=Called%20an%20adaptive%20valve%2C%20it's,they%20can%20get%20stuck%20shut.

 

[petethepug]

I never thought about that. The 15-20 Denali & Escalade 6.2L have stainless catback exhaust. You could have a heyday at a wrecker pulling some OEM dual exhaust set ups and mufflers & tips.

 

[Marshall 008]

do you care about all out hp? if not these seem to go a long way to keeping an ls quiet. I have a hybrid and it's got what they call a adaptive valve in the exhaust. gm started adding them to the normal trucks the next Gen up. also seen some stock mufflers cut open and these are inside. it's just a spring loaded valve in a pipe.

mine has the normal muffler and normal after axle resonator. between the 2 is one of these and it's dead quiet exhaust wise anywhere under like 3k rpm. you hear injector tick over exhaust at idle haha. which is good, cause these trucks have what is kinda a cvt tranny, so they spend a lot of time at one rpm while mph is going up from the tranny using motors and planetarys to change ratios. it would be super annoying if you heard the exhaust droning away at one tone. even cvt cars had to have fake gear changes programed in.


with it idling you can open it by hand it definitely tell it's doing a lot to kill the noise. what it does to up? I honestly don't know. all the new trucks seem to make good power thou.

https://bobistheoilguy.com/forums/threads/flapper-valve-in-gm-truck-exhaust.293565/#:~:text=Called%20an%20adaptive%20valve%2C%20it's,they%20can%20get%20stuck%20shut.

Not really concerned about HP at the moment. The truck is going to get a new replacement engine soon. The stock 5.3 has enough for me in this family rig. Reliability is the main concern for our overland trips.

 

[iamdub]

I’m planning to have a custom high clearance exhaust made for my 2008 Tahoe Z71. I’m looking for something similar to the magnaflow overland series systems.
I want the exhaust to be quiet like stock or at least quiet at idle and driving. Don’t mind a little noise while flooring it but with manners. It will be from the Y-pipe back. Going to use V-band clamps and stainless tubing and resonators to keep the drone out.

Thanks in advance for any input.

Can't beat this for the price. Flows better than stock and sounds like stock in most instances. Only 5" high body. Has a smooth, healthy growl at WOT and high RPM. Nothing obtrusive, though and no drone. Just cut out stock muffler and weld this one in. No resonators or additional parts needed.

Cherry Bomb SA2589 Cherry Bomb Salute Mufflers | Summit Racing

Free Shipping - Cherry Bomb Salute Mufflers with qualifying orders of $109. Shop Mufflers at Summit Racing.

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Cheaper at RockAuto, but factor in shipping for all sources. Don't forget the 5% code if you use RA. https://www.rockauto.com/en/parts/cherry+bomb,SA2589,muffler,5872

 

[petethepug]

Isn’t a straight through muffler on a V8 going to attract a race?

 

[iamdub]

Isn’t a straight through muffler on a V8 going to attract a race?

Don't make this about race.

 

[Trey Hardy]

I’m planning to have a custom high clearance exhaust made for my 2008 Tahoe Z71. I’m looking for something similar to the magnaflow overland series systems.
I want the exhaust to be quiet like stock or at least quiet at idle and driving. Don’t mind a little noise while flooring it but with manners. It will be from the Y-pipe back. Going to use V-band clamps and stainless tubing and resonators to keep the drone out.

Thanks in advance for any input.

Can’t go wrong with a 40 series flow master
If you want louder get the 10 series but the 40 series is pretty quiet

 

[j91z28d1]

funny how all your definitions of quiet are different than mine. I was thinking like hey, is this thing running... not flowmaster quiet ol.

I laughed at myself

 

[petethepug]

Got me. Irony huh?

 

[iamdub]

Got me. Irony huh?

You know that was funny!
The service writer (was getting my company van serviced) as well as myself were caught off guard by my sudden laughing outburst.

 

[petethepug]

Just keep’n it real.

 

[blackelky]

I have a flow fx 4x9 muffler that's pretty tame

 

[iamdub]

I have a flow fx 4x9 muffler that's pretty tame

How long is it? (That's what she said)

These elliptical ("oval") straight-through packed mufflers are all about the same width and height. It's the body length that gives us reference as to how loud it'll be. Generally, the 22" will be like stock, 18" will be a few notches louder (but still mild), the 14" louder still, etc.

 

[blackelky]

How long is it? (That's what she said)

These elliptical ("oval") straight-through packed mufflers are all about the same width and height. It's the body length that gives us reference as to how loud it'll be. Generally, the 22" will be like stock, 18" will be a few notches louder (but still mild), the 14" louder still, etc.

14" just a low rumble only loud on open throttle

 

[iamdub]

14" just a low rumble only loud on open throttle

That's the characteristics I like about these mufflers. Calm when you want it calm, proportionately loud when appropriate. The scale of volume is determined simply by the length. Although subjective, I believe the sound itself compliments these types of vehicles. Best bang for the buck, IMO.