Taming a 3794

Yngdmax92

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Sep 26, 2013
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Guys, or danville folks. I use to use my truck for alot more play, now i tow skid steers, dump trailers and mini excavators. i need to calm down the whistle and back off the noise. send me in the right direction...

and as brad sankey suggested adding another turbo. no lol its a work truck now and i need it to be quieter for residential work. Can anybody give me some good suggestions as far as mufflers or resonators. thanks fellas
 

Yngdmax92

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Sep 26, 2013
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Say what????????? Why would I switch back to a stock turbo? I didn't say the performance is bad, I just can't be so loud in residential areas
 

ZeroGravity58

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Mar 23, 2008
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Say what????????? Why would I switch back to a stock turbo? I didn't say the performance is bad, I just can't be so loud in residential areas
I said nothing about the performance. It's hard to get rid of the whistle of a 10 blade turbine wheel. I guess you can put a stock muffler back on it.
 

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Mar 1, 2013
1,705
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Des Moines, Iowa
Guys, or danville folks. I use to use my truck for alot more play, now i tow skid steers, dump trailers and mini excavators. i need to calm down the whistle and back off the noise. send me in the right direction...

and as brad sankey suggested adding another turbo. no lol its a work truck now and i need it to be quieter for residential work. Can anybody give me some good suggestions as far as mufflers or resonators. thanks fellas
Well if you want to tow better, lower egts and quiet the exhaust, compounds will do a lot. I used to have people say my truck was too loud even with a muffler, now the engine/fan is the loudest thing.
 

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<<<IT WORKS
Mar 1, 2013
1,705
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Des Moines, Iowa
Going back to the original question without doing the compound routine, you could get your tuner to make one of your tunes be basically a Fixed vane tune, you would lose spool Time but wouldn't have the high pitch sound for whenever you wanted it. The other options would be to do the biggest muffler you can find and always have your truck sound stock.
 
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Yngdmax92

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Sep 26, 2013
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It's an extended cab so idk how much of a muffler I could fit. Probably a 30in jobber. I'll have to look around. Thanks fellas.
 

zakkb787

<that’s not me...
Sep 29, 2014
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Granite Falls NC
I’d put either the biggest muffler you can find or the longest FTE resonator you can put where the muffler would go. Then a 12” Flo Pro Twister as far forward as you can get in the system. Mines at the back of the pipe that attaches to the down pipe.
 

hntngkd

Member
Jun 24, 2013
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Attica, Mi
I get more engine noise than anything with compounds but theyre both Borgs, no VGT. Even with a stack on the highway its pretty reasonable as far as noise goes. I can still talk at a normal tone.
 

Bdsankey

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Feb 1, 2018
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As others have said, the biggest resonator/twister setup you can get will be your best bet or you can always go compounds. The amount of whistle an atmospheric S400 takes out of a VGT/S400 setup is kind of crazy IMO.
 
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bimmer95

Member
Mar 15, 2019
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Morgantown Pennsylvania
I put a 30 inch flopro flow through on my extended cab it fit in nice..don't know how much vgt whistle it will take care of but it sure toned down the lb7/single s300 racket for me

Sent from my SM-G981U using Tapatalk
 

Yngdmax92

Member
Sep 26, 2013
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Just installed the flowmaster -hushpower. Absolutely no whistle and it's got a nice tone! Absolutely incredible! Thanks mark! Much appreciated.
 

Dozerboy

Well-known member
Jun 23, 2009
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TX of course
You can tone down the whistle under light throttle pretty easy with tuning and not lose performance. It fixed that banchee screaming whistle while "idling" through my neighborhood. Not much more you can do once your in the boost then what you have done.
 

Yngdmax92

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Sep 26, 2013
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The hush power did the trick. Excatly what I was looking for. It didnt totally get rid of it, but I can drive around neighbor hoods or past state police and not everyone staring at me anymore lol
 

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