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Magnaflow Mufflers #2714130
11/09/19 01:29 AM
11/09/19 01:29 AM
Joined: Feb 2003
Posts: 16,126
Mesa, Arizona
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dart4forte Offline OP
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Mesa, Arizona
Who’s running Magnaflows? Looking to replace the Flowmasters on my truck. I’d like to get something not too loud, just want a mellow sound.

Last edited by dart4forte; 11/09/19 01:30 AM.

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Re: Magnaflow Mufflers [Re: dart4forte] #2714133
11/09/19 02:48 AM
11/09/19 02:48 AM
Joined: Aug 2011
Posts: 2,853
Pattison Texas
CSK Offline
master
CSK  Offline
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Pattison Texas
3" Magna flows , X pipe, not bad but does have a drone on the Freeway.


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Magnaflow Mufflers [Re: CSK] #2714136
11/09/19 04:24 AM
11/09/19 04:24 AM
Joined: Aug 2019
Posts: 9,387
Super Spudsville
Mr PotatoHead Offline
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Mr PotatoHead  Offline
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Super Spudsville
They are actually pretty quiet, the newer SS are much more so then the older al. body units. The do have a lifespan if your run them hard, Im an rpm freak and much over 7k alot seems to destroy them inside, then they sound like a straight through race muffler.

On my one ride with a ive two cars with them, the 2.5 system is loads easier on the ear then the 3 inch ones.

I can pm you a vid if you like.


STOP POTATO HATE!
Re: Magnaflow Mufflers [Re: Mr PotatoHead] #2714154
11/09/19 08:29 AM
11/09/19 08:29 AM
Joined: May 2014
Posts: 206
Paducah, KY USA Earth
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jcruse64 Offline
enthusiast
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Joined: May 2014
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Paducah, KY USA Earth
I'm running Magnaflow (single of y to muffler, then split to duals out the back) on my '93 W150 360. I love it. A little rumble, but not too much, and not noisy at high speeds either. I'm not a big fan of loud and proud anymore. I'll be running dual Magnaflows on my '73 W200 360 when I get the dash back together and the truck running.

Re: Magnaflow Mufflers [Re: jcruse64] #2714161
11/09/19 09:27 AM
11/09/19 09:27 AM
Joined: Jul 2006
Posts: 619
nj
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JAMESDART Offline
mopar
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Joined: Jul 2006
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nj
I like them. I used 2 different ones on my 5.7 2500, one big round one on my wagoneer, and i have one on my magnum powered wrangler. Those were different length and round vs oval but all 3" single. All had different results. The ram was the quietest. Wagoneer had the longest round one wasn't terribly loud but had a decent rumble at idle and got pretty loud at higher rpm. Pretty quiet cruising with od. i like to use the longest muffler that will fit.
My wrangler is loud. Its rumbly at idle, and loud when you step on it but it's a very short system. All stainless, 2-1/2 into 3" magnaflow Y with a magnaflow cat mounted to it and I think and 18" magnaflow welded right to the cat and a turn down.

Also have magnaflow cat back in my wife's 4.0 wrangler.
Some day i want to ditch the super turbos on the duster for magnaflows.

Re: Magnaflow Mufflers [Re: dart4forte] #2714176
11/09/19 10:35 AM
11/09/19 10:35 AM
Joined: Dec 2007
Posts: 18,157
Mass
DAYCLONA Offline
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Posts: 18,157
Mass
Originally Posted by dart4forte
Who’s running Magnaflows? Looking to replace the Flowmasters on my truck. I’d like to get something not too loud, just want a mellow sound.



I have a pair of SS MagnaFlows on my 87 PowerWagon, kinda mellow sounding for what I really prefer, they offer no real back pressure, when they "go", I won't be replacing them with anything from MagnaFlow... IMHO the MagnaFlows are pretty much the same as the FlowMasters I had on my truck previously...

Re: Magnaflow Mufflers [Re: dart4forte] #2714187
11/09/19 11:23 AM
11/09/19 11:23 AM
Joined: Jan 2003
Posts: 1,261
Phoenix, AZ
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Belvedere1 Offline
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Posts: 1,261
Phoenix, AZ
No experience with Magnaflow but I ordered a pair of Dynomax Ultra Flo in a 20" case for the Belvedere. You can give those a listen here in the next couple of weeks for a comparison.

Re: Magnaflow Mufflers [Re: Belvedere1] #2714203
11/09/19 11:53 AM
11/09/19 11:53 AM
Joined: Jan 2003
Posts: 1,374
Houston,Tx.
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Lee446 Offline
pro stock
Lee446  Offline
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Joined: Jan 2003
Posts: 1,374
Houston,Tx.
I have run both the ultraflows and the magnaflows on my Hemi and hands down, I prefer the Magnaflows. They have a bit more mellow tone, not as harsh as the Ultra's. At cruise, it is pleasantly low key. I prefer quiet and stealth and while none of the straight thru's are quiet, the Mags are better mannered. I also have an X-pipe and that helps tone-wise.

Re: Magnaflow Mufflers [Re: dart4forte] #2714215
11/09/19 12:47 PM
11/09/19 12:47 PM
Joined: Aug 2005
Posts: 5,998
Salem
Grizzly Offline
Moparts Proctologist
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Salem
I took a single Flowmaster 40 off my 360 Magnum truck and put Magnaflow duals on.

Lost quite a bit of bottom end power and the sound is awful. Big mistake, I'll never do that again.


Mo' Farts

Moderated by "tbagger".
Re: Magnaflow Mufflers [Re: dart4forte] #2714235
11/09/19 01:17 PM
11/09/19 01:17 PM
Joined: Aug 2003
Posts: 43,096
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
I had a set of the early ,not stainless steel, 14x7oval with 3.0 inch side inlet with center outlet mounted at the rear bumper on my pump gas Duster I built in 2002/2004. It had a 400 stroker motor that made over 600 HP with a 6 pack set up on it, it was loud at WOT with them on , not bad at light throttle cruise up
It was NOT restrictive at all, my car only pickup .02 MPH and .02 ET in the 1/8 mile by removing the complete 3.0 inch system from the fenderwell headers back work I'm sure the gain was the weight, not the flow gains shruggy
I would buy several more sets of them if I could but I don't see them available anymore whiney

Last edited by Cab_Burge; 11/09/19 01:18 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Magnaflow Mufflers [Re: Cab_Burge] #2714264
11/09/19 02:19 PM
11/09/19 02:19 PM
Joined: Aug 2011
Posts: 2,853
Pattison Texas
CSK Offline
master
CSK  Offline
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Joined: Aug 2011
Posts: 2,853
Pattison Texas
The Magna Flows I have are straight through like the Dyno max


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Magnaflow Mufflers [Re: CSK] #2714268
11/09/19 03:00 PM
11/09/19 03:00 PM
Joined: Aug 2019
Posts: 9,387
Super Spudsville
Mr PotatoHead Offline
Half Baked
Mr PotatoHead  Offline
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Super Spudsville
Older vs new. I myself think youd be happy with them in the application outlined.

E5.jpg

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Re: Magnaflow Mufflers [Re: Grizzly] #2714269
11/09/19 03:05 PM
11/09/19 03:05 PM
Joined: Aug 2019
Posts: 9,387
Super Spudsville
Mr PotatoHead Offline
Half Baked
Mr PotatoHead  Offline
Half Baked

Joined: Aug 2019
Posts: 9,387
Super Spudsville

All about preference, you couldnt give me a truck load of the 40 series flowhackers, almost every chevy I see these days has them things. But again, its all about preference.

Originally Posted by Grizzly
I took a single Flowmaster 40 off my 360 Magnum truck and put Magnaflow duals on.

Lost quite a bit of bottom end power and the sound is awful. Big mistake, I'll never do that again.


STOP POTATO HATE!
Re: Magnaflow Mufflers [Re: Grizzly] #2714279
11/09/19 03:44 PM
11/09/19 03:44 PM
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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HotRodDave Offline
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Kalispell Mt.
Originally Posted by Grizzly
I took a single Flowmaster 40 off my 360 Magnum truck and put Magnaflow duals on.

Lost quite a bit of bottom end power and the sound is awful. Big mistake, I'll never do that again.



The power issue is that the magnaflow is now flowing a lot more air out and has leaned out the mix, you need to have the computer tuned to dump in some more fuel or the poor mans method is to put in a set of 460 ferd injectors from the junkyard.


I am not causing global warming, I am just trying to hold off a impending Ice Age!



Re: Magnaflow Mufflers [Re: CSK] #2714296
11/09/19 05:11 PM
11/09/19 05:11 PM
Joined: Jan 2003
Posts: 8,392
Highland, MI.
Sunroofcuda Offline
master
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master

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Posts: 8,392
Highland, MI.
Originally Posted by csk
The Magna Flows I have are straight through like the Dyno max


Magnaflows were less expensive knock-offs of the Dynomax Race Magnums. Neither do any tuning of the exhaust. To me they just sound "flat."


No Man With A Good Car Needs To Be Justified
Re: Magnaflow Mufflers [Re: Sunroofcuda] #2714299
11/09/19 05:16 PM
11/09/19 05:16 PM
Joined: Apr 2012
Posts: 1,235
Phoenix, AZ
Jjs72D Offline
Deep in the closet
Jjs72D  Offline
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Joined: Apr 2012
Posts: 1,235
Phoenix, AZ
How about the Powersticks ???

Re: Magnaflow Mufflers [Re: Jjs72D] #2714328
11/09/19 07:26 PM
11/09/19 07:26 PM
Joined: Jan 2003
Posts: 8,392
Highland, MI.
Sunroofcuda Offline
master
Sunroofcuda  Offline
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Posts: 8,392
Highland, MI.
Originally Posted by Jjs72D
How about the Powersticks ???


Well, IF you must ask! (yes - chambered exhaust TUNES sound in a rather unique way..............).

Here is my new page for the Ram Kits - movie is included: http://www.classicchambered.com/classic/ram.html

Requires some cutting, welding, & the installer will need to bend & weld some new rod hangers. On the Rams with this exhaust setup, everything lines up straight-on - there are no offsets. This is my truck & inside the cab there is a little resonance when going uphill or pulling a trailer (under load). Normal driving there is enough rumble so you know the exhaust is not stock, but when you put your foot into it it really sings. The setup does not sound like an old dump truck with holes in the muffler!


No Man With A Good Car Needs To Be Justified
Re: Magnaflow Mufflers [Re: Sunroofcuda] #2714695
11/11/19 01:49 AM
11/11/19 01:49 AM
Joined: Apr 2012
Posts: 1,235
Phoenix, AZ
Jjs72D Offline
Deep in the closet
Jjs72D  Offline
Deep in the closet

Joined: Apr 2012
Posts: 1,235
Phoenix, AZ
Sounds great. New trucks sound like they are electric already! Your products make them sound like a truck should sound from the factory!

Re: Magnaflow Mufflers [Re: Jjs72D] #2714739
11/11/19 10:34 AM
11/11/19 10:34 AM
Joined: Oct 2006
Posts: 7,363
Iowa
burdar Offline
Owen's Dad
burdar  Offline
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Posts: 7,363
Iowa
I had a single Flowmaster 50 series on an 01 Durango. It sounded great. It had a nice aggressive idle sound but mellowed out on the road with very little drone. That was running through the stock cat converter. Eventually the muffler rusted out and I needed to replace it. I went with a Walker Tuff Turbo because it was significantly cheaper. I was kind of bummed that I would lose that sound. I was surprised when I got the truck back and the sound hadn't changed at all. It still had the same aggressive idle and quieted down on the road. The stock muffler was humongous. Changing to a smaller muffler was what changed the sound more than the brand of muffler.

Re: Magnaflow Mufflers [Re: burdar] #2714978
11/11/19 09:52 PM
11/11/19 09:52 PM
Joined: Feb 2004
Posts: 3,334
home of the Buckeyes
Butterscotch71 Offline
Lost Title
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Posts: 3,334
home of the Buckeyes
I’ve put mangaflows on my last 2 trucks (2010 with 4.7 and 2015 with 5.7) and I believe they sound the best. I go with the longer muffler for a deeper tone.


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