Need to kill cabin drone
Thread Starter
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More Turbo
Joined: Apr 2008
Posts: 515
Likes: 6
From: North East Arkansas.
Need to kill cabin drone
Hey guys, I've got a 1999 7.3 Powerstroke that I recently install a Flo-Pro 4" downpipe into a 5" stainless steel exhaust without no muffler. I like the system except when towing my small work trailer at 55-60. The Cab Drone noise is deafening. Any suggestions on a good muffler that will have little to no effect on exhaust flow, but do away with the drone in the cab. I want to stay Stainless.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I have Flo Pro 4" turbo-back with a muffler. I added a resonator and it worked, but that killed the tube whistle - so out it came. I am now a proud owner of two rolls of manifold wrap. I am thinking of pop riveting the leading edges with stainless steel rivets, then spiral it back - with hose clamps here and there.
Thread Starter
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More Turbo
Joined: Apr 2008
Posts: 515
Likes: 6
From: North East Arkansas.
What is manifold wrap? And what does it do for cab drone tone. My truck may sound cool, but riding around with ear plugs in is not. I'm trying to save the hearing I have left. Turkey season is coming soon.
Elder User
Joined: Aug 2015
Posts: 535
Likes: 3
I have the MBRP but it droned too. I put the resonator on and it was much better, but as tugly said, no whistle. So I was told by MBRP to turn the resonator backwards. Now it whistles and the drone is much less. THey said it flows better backwards too, but doesn't muffle as much. SO pick your way, but the resonator is the fix, and sound proofing. A muffler will kill any benefit you got out of the new system. That's why they come with a resonator instead. Another solution I've heard is to splurge for the "Y" pipe set up and split it into two. Does nothing for performance, and cost a bit, but it is the best solution if you want it quiet. I've also notice if you point the tip to the back it lessons the drone. I think when it comes out the side it resonates threw the body.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I haven't tried the backward resonator trick yet, but I know it can be done. Mine has to be welded on by the shop, so it's a few Quarter Caliber rounds every time I experiment. My muffler guy thinks I'm crazy, but he keeps taking my money.
I'd like to have just the resonator without a muffler, but I won't make friends with the neighbors when I sometimes pull out of the driveway as early as oh-freaking-four-hundred in the morning.
Manifold wrap - any auto parts store will have this - think of it a mummifying the exhaust pipe. Our pipes are a large diameter and very long (I just know there are those itching to make masculine innuendo here), so it takes a lot of wrap (aw crap... now come the Trojan jokes) to go turbo-to-exit.
I'd like to have just the resonator without a muffler, but I won't make friends with the neighbors when I sometimes pull out of the driveway as early as oh-freaking-four-hundred in the morning.
Manifold wrap - any auto parts store will have this - think of it a mummifying the exhaust pipe. Our pipes are a large diameter and very long (I just know there are those itching to make masculine innuendo here), so it takes a lot of wrap (aw crap... now come the Trojan jokes) to go turbo-to-exit.
Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
My brother in law has a Chevrolet dually with a five in exhaust. The noise is so bad I wouldn't ride with him to the damn store.
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Cargo Master
Joined: Mar 2008
Posts: 2,975
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From: Archdale,N.C.
If you want good flow with good sound.. Quiet... Go with a MagnaFlow 4" turbo back with the muffler.
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Thread Starter
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More Turbo
Joined: Apr 2008
Posts: 515
Likes: 6
From: North East Arkansas.
The new pipe exits in the same place as the old one did. So do y'all think the drone comes from portions of the pipe, out the back, or both? Tugly, I would assume you think from the pipe itself since you wrap your exhaust pipe. Going to check on resonator.
Thread Starter
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More Turbo
Joined: Apr 2008
Posts: 515
Likes: 6
From: North East Arkansas.
The drone is not as bad when I'm not towing the work trailer. I use my truck for my business, so it needs to be able to row everyday. I bought it new (to me) in Manchester Michigan with about 2100 miles on it, back in August of 2000.
Logistics Pro
Joined: Apr 2011
Posts: 4,744
Likes: 5
From: Earth
wouldn't sound deadening (the shiny silver stuff) mats/carpeting or what ever it is work here?? I know there is sound deadening mats that you peal-n'-stick that works behind the door panels and things like that, put some behind the door panels and all that, new material will deaden the sound like wounder!!! I dyna matted my F150 and took it from an old whistling drone ride to some thing that was almost as quiet as a modern day car! where I could hear the radio with out issues at all and could hold a proper conversation too!
Honestly considering putting Dyna mat in my F250 just because its that good at quieting the road noises and all that extra stuff you don't want really....
Honestly considering putting Dyna mat in my F250 just because its that good at quieting the road noises and all that extra stuff you don't want really....