Looking for recommendations for a quiet performance muffler...

[Jabes1]

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As the title states, looking for a quiet muffler, little to no interior resonance in 2.5 or 3 inch sizes. Ideally would like to be able to have a conversation in the cab and not be so loud that I'm worried about my daughters hearing...

[INSIDIOUS '86]

Spintech mufflers. Built like bomb shelters and can be quiet as hell and still out flow magnaflows 3000xl series should do you
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[LEEVON]

I put a set of Dynomax VT's on my last later model silverado because those trucks have bad drone with just about anything else. They have valves inside and do what they advertise. Idle speed up to light throttle no noise. Get on it, noise.

[INSIDIOUS '86]

Originally Posted by LEEVON

I put a set of Dynomax VT's on my last later model silverado because those trucks have bad drone with just about anything else. They have valves inside and do what they advertise. Idle speed up to light throttle no noise. Get on it, noise.

Good so far ? Many have been curios to the durability of that spring under heat cycling or any rattles
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[Vbjunker]

Got a very very high flow cat and a Thrush welded muffler. Nice rumble, a little much in the parking garage, though. On the highway, not so bad.
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[LEEVON]

Originally Posted by INSIDIOUS '86

Good so far ? Many have been curios to the durability of that spring under heat cycling or any rattles
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I had them for 6 months...not long enough but they have a lifetime warranty. Exhaust guy was impressed, I loved them!

[INSIDIOUS '86]

Yah the thrush are nice. Cheap too I like those better than the flowbastards
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[Vbjunker]

Part throttle it sounds tough. I think I ordered from Jegs.
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[INSIDIOUS '86]

Hmm lifetime well I would imagine they do so cause they put the time into them
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[jsavage977]

I got 2 Aero Exhaust mufflers, theyr huge shiny and suppousedly flow +5 cfm more than open pipes. They are super quiet to about 3000rpm and then they start a deep performance rumble, but still not loud at all. But too quiet, gonna have to ditch them and find some Cherry Bombs lol yea I know im a redneck.

[INSIDIOUS '86]

Not really possible to have a muffler flow more than an open pipe. The hooker aero chambers are nice as well as the borla xrswhich are basicly a magnaflow
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[jsavage977]

Originally Posted by INSIDIOUS '86

Not really possible to have a muffler flow more than an open pipe. The hooker aero chambers are nice as well as the borla xrswhich are basicly a magnaflow
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My bad.. I got mixed up.. they are dyno proven to produce +5 more ft/lbs than open pipes. Well according to my Jegs catalog lol

[INSIDIOUS '86]

Originally Posted by jsavage977

My bad.. I got mixed up.. they are dyno proven to produce +5 more ft/lbs than open pipes. Well according to my Jegs catalog lol

Yah. Usually in a case like that it means that since your headers free flow so much that your actually over scavenging the exhaust and pulling out intake charge as well. A system with a minor amount of pressure can gain you some hp but getting a header that won't pull as much or changing the cam timing is harder than just outing on a muffler And only getting 3/4 power back from the over efficiancy.

You can take that same claim and apply it to several mufflers, there was a big test done yrs ago all the mufflers were with 5hp of eachother till you got to the more restrictive designs
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[y5mgisi]

I think the dynomax ct's will be my next muffler. Just gotta try them out!

[MalibuSSwagon]

Looking for advice on my exhaust plans. I like the noise and rumble like anyone does, but I'm concerned with interior exhaust drone considering our trucks are tin cans with little to no sound deadening.

I'm picking up some long tube exhaust headers for my little 305, followed by 2.5 in pipes going into this muffler - Spintech Sportsman 3000, followed by a 3 in pipe over the axle and out the side behind the tire. What am I expecting for interior exhaust noise here?

[Space Monkey]

I have cherry bombs. Omg they are so loud.
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[rs74]

What about pypes or magnaflow. Are they a bit on the noisey side? I have heard the videos but that is not like hearing it first hand or being in the cab going down the road. Those are the two I am most interested in.

[INSIDIOUS '86]

Pypes are a nice muffler. They aren't loud but they def don't whisper. They have since clean note to them. Magnaflows always have been nice. Don't expect them to last forever though. They are still a cheap made muffler with a $100 name
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[LEEVON]

Originally Posted by INSIDIOUS '86

Pypes are a nice muffler. They aren't loud but they def don't whisper. They have since clean note to them. Magnaflows always have been nice. Don't expect them to last forever though. They are still a cheap made muffler with a $100 name
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Ditto the the Magnaflows. My buddy used to own a muffler distributorship, they also made knock-off chambered versions of the popular series that cost next to nothing to make. You couldn't tell the difference...

[Jabes1]

I went from a flowmaster 40 to a magnaflow and now to a large chamber Gibson. Its nice sounding, changed the lope to where you can hear the valves more. I guess what I really want to get rid of is the droning in the cab. Drives me nuts! I have an abbreviated exhaust that dumps in front of the axle and Im wondering if a full exit tailpipe would get rid of the droning? Im considering the Spintech 3000's as well... not thrilled on the price though.

[INSIDIOUS '86]

Originally Posted by Jabes1

I went from a flowmaster 40 to a magnaflow and now to a large chamber Gibson. Its nice sounding, changed the lope to where you can hear the valves more. I guess what I really want to get rid of is the droning in the cab. Drives me nuts! I have an abbreviated exhaust that dumps in front of the axle and Im wondering if a full exit tailpipe would get rid of the droning? Im considering the Spintech 3000's as well... not thrilled on the price though.

The spintechs are priced for thier material. They are Prob some of the best priced mufflers I know. But having the exhaust exit out from under the vehicle will make a HUGE difference
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[motornut]

Originally Posted by Jabes1

I went from a flowmaster 40 to a magnaflow and now to a large chamber Gibson. Its nice sounding, changed the lope to where you can hear the valves more. I guess what I really want to get rid of is the droning in the cab. Drives me nuts! I have an abbreviated exhaust that dumps in front of the axle and Im wondering if a full exit tailpipe would get rid of the droning? Im considering the Spintech 3000's as well... not thrilled on the price though.

do you short pipes point straight down?
i find a slight angle helped my Cherrys get a little quieter(about a 45 angle)
otherwise point them straight out the sides

[68Timber]

I've already bought a pair of magnaflows but finally listened to the spintech 3000's on youboob. They do sound pretty good. I can't find enough clips of them to decide, though.

[crewcabshorty]

I also have a dynamax vt on my truck , I love it , no drone! I have had flowmasters, glasspacks, I was tired of the drone. now I can listen to a conversation in the truck with the windows rolled up or down. they also sound really good under throttle!!

[cory d]

but its fun driving a new girl to a date with 15" glass packs ending under the cab. it makes them yell