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#4292160 - 01/03/17 01:04 PM Magnaflow mufflers - Straight through vs chambered
emmett442 Offline


Registered: 12/07/16
Posts: 29
Loc: Wisconsin
Anyone have experience with both? Tough shopping for mufflers when you really don't know what you're getting till it's installed. I've heard loud chambered, quiet straight-through, and vice versa... so I really don't know what to expect when it comes to these specific models.

Like the rest of the world, I'm simply looking for a little idle burble, WOT throat, and highway silence. Minute, insignificant performance changes are not a concern - only looking for sound.

Considering 4"x9"x18" in either configuration. To avoid any unnecessary discussion (other brands, other sizes), only one of these two I've linked are in the running:

Chambered
Straight-through
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#4292165 - 01/03/17 01:10 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
Ramblejam Offline


Registered: 11/05/13
Posts: 2867
Loc: Kentucky
For the Crown Vic?
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#4292169 - 01/03/17 01:12 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
emmett442 Offline


Registered: 12/07/16
Posts: 29
Loc: Wisconsin
Yessir
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2011 Crown Victoria LX
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#4292173 - 01/03/17 01:14 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
barkingspider Offline


Registered: 12/22/13
Posts: 1407
Loc: socal
They both have unique sounds that only you can decide which u like better as its all preference. I prefer the straight thru sound Vs chambered. The hardest part is getting "highway silence". In my experience, magnaflow and most aftermarket performance mufflers drone. But it will depend on your vehicle. Good luck.
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#4292209 - 01/03/17 01:41 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
jeepman3071 Online   content


Registered: 04/15/10
Posts: 2543
Loc: Storrs, Connecticut
Chambered mufflers are louder than the straight through, but a different kind of loud. I would describe the chambered as throaty/raspy while the straight through has a deep powerful sound. I've heard both on a crown vic. My personal preference is the straight through. Youtube clips (with headphones to help with the bass) can be helpful.
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#4292216 - 01/03/17 01:45 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
1977c10phxdriver Offline


Registered: 05/04/04
Posts: 365
Loc: Phoenix Arizona
If you have a shop in mind to do the sale and install, ask if they will hang each on (not welded) and let you listen on the rack. I"ve done it before, usually not a problem.

I have the "wide body" HUMONGOUS Magnaflows in full duals and Hooker headers (5" by 11" by 22" body) on my 406 SBC truck. Very nice sound. Smooth but like others say, they do drone at cruise some but I don't mind a little. Every engine and every bend and every muffler sounds a little different. A tough call from a computer.

Mark
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#4292229 - 01/03/17 01:56 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
RedOakRanch Offline


Registered: 11/10/13
Posts: 583
Loc: Central Coast California
I recently saw a video comparing the 2 and the straight through made more power but was louder. Even when down sizing the pipe. So loud and more power or quiet and less power?
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#4292238 - 01/03/17 02:05 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
CT8 Offline


Registered: 10/09/14
Posts: 7690
Loc: Moving,not there yet.
Quite is better always.

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#4292255 - 01/03/17 02:18 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: CT8]
jeepman3071 Online   content


Registered: 04/15/10
Posts: 2543
Loc: Storrs, Connecticut
Originally Posted By: CT8
Quite is better always.


+1

In high school I loved loud exhaust. Now stealth is the name of the game. Loud exhaust seems to only attract attention from cops.
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#4292257 - 01/03/17 02:18 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
Fsharp Offline


Registered: 12/11/15
Posts: 300
Loc: Kentucky
I'd go with the chambered muffler because there's a chance the chambers will reduce drone causing resonance and there's no packing to degrade.

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#4292280 - 01/03/17 02:39 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
bdcardinal Offline


Registered: 06/03/05
Posts: 9408
Loc: Santa Barbara, CA
Straight through like a Borla sound the best on a mod motor IMHO.
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#4292331 - 01/03/17 03:20 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
rat Offline


Registered: 12/10/06
Posts: 306
Loc: Michigan
Borla or Magnaflow. Anything chambered like the Dronemaster sounds awful IMHO.
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#4292343 - 01/03/17 03:32 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
02SE Offline


Registered: 12/30/05
Posts: 1304
Loc: The Canyons
I don't know if Magnaflow has changed their design on their straight-through mufflers recently or not. The last time I checked, (about 3 years ago) their straight-through mufflers with case lengths over 18", they used a two-piece tube poorly welded together in the middle of the muffler. It was a design that is almost guaranteed to fail, and they often did/do.

So if you choose one of their straight-through designs with a case length over 18", inspect it closely to see if they are still using a two-piece tube design, before installing.

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#4292386 - 01/03/17 04:08 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
splinter Offline


Registered: 07/01/13
Posts: 1154
Loc: Newport Beach, CA
Chambered has no place on a classy Crown Vic imho. Leave those gutted tin can chambered dronesters for the Mustang brothers.

Borla makes some nice and durable hardware if you can swing it.
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#4292407 - 01/03/17 04:28 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
spasm3 Online   content


Registered: 05/30/10
Posts: 6927
Loc: North Carolina
I'd suggest glasspacks, long glass packs. Won't be popular on bitog. With the factory cats, its not that loud.

I have them on the olds, and the avalanche.
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#4292422 - 01/03/17 04:45 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
buck91 Offline


Registered: 04/17/12
Posts: 2000
Loc: West Michigan
Running dynomax ultraflow (straight through style) with o/r x pipe in the mustang. Same engine as the Vic... Love it, great tone and sounds mean at wot but otherwise rather quiet and tame. Had the chambered dynomax on a Vic before I found them obnoxious.
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#4292456 - 01/03/17 05:30 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
440Magnum Offline


Registered: 02/01/09
Posts: 8497
Loc: Texas
The final sound depends SO much on things other than just the muffler that its going to be almost impossible to predict.

I have the straight-thru Magnaflows on my '69 Coronet R/T. It has the factory high-performance cast iron manifolds (not equal-length headers), 2.5" tubing front to back, and an "H" pipe crossover ahead of the mufflers- as nearly a copy of the stock 1969 Dodge system as possible without buying an actual reproduction factory system. Obviously no catcons in 1969.

At idle and cruising, it has a deep-throated burble that sounds a lot like the stock Goerlich mufflers from 1969 did, maybe just a little louder. But as you open the throttle, there comes a point where the sound, for lack of a better description, "punches through" the muffling effect and it almost sounds like straight pipes. For that car (not daily driven) I absolutely freakin' LOVE the results.

Headers would probably change that a lot, since some of the "punch" effect is due to the stacking of exhaust pulses in the manifolds as opposed to equal-length tubes. Catcons would quiet it and possibly make it a little raspier by smoothing the low-frequency pulses through the tubes Removing the H-pipe would likely make it drone at highway speeds. My concern in a car like a Crown Vic would be that even with the catcons, the other effects (and especially if it doesn't have a crossover or H-pipe) would make it drone too much for your taste at highway speeds. But honestly, I've had worse drone on other cars with similar exhaust and chambered mufflers, so I'm not really sure that's necessarily going to be better overall.

Modern muscle car exhaust systems have a whole lot going on *just* to get a little loudness without highway drone- look at the combination of resonators and mufflers on a Challenger, Mustang, or Camaro (not even considering the active exhaust dampers on SRT and Hellcat Challengers, Corvettes, etc.). And the biggest disappointment I see on the forums when people change exhaust systems is that it causes drone.

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#4292526 - 01/03/17 06:44 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 3437
Loc: USA
If I ever wanted a cool exhaust and there wasn't a good catback available for it, I'd have a muffler shop do a custom exhaust with a glasspack for the resonator along with a Dynomax muffler smile

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#4292550 - 01/03/17 07:06 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: 440Magnum]
emmett442 Offline


Registered: 12/07/16
Posts: 29
Loc: Wisconsin
Originally Posted By: 440Magnum
The final sound depends SO much on things other than just the muffler that its going to be almost impossible to predict.

I have the straight-thru Magnaflows on my '69 Coronet R/T. It has the factory high-performance cast iron manifolds (not equal-length headers), 2.5" tubing front to back, and an "H" pipe crossover ahead of the mufflers- as nearly a copy of the stock 1969 Dodge system as possible without buying an actual reproduction factory system. Obviously no catcons in 1969.

At idle and cruising, it has a deep-throated burble that sounds a lot like the stock Goerlich mufflers from 1969 did, maybe just a little louder. But as you open the throttle, there comes a point where the sound, for lack of a better description, "punches through" the muffling effect and it almost sounds like straight pipes. For that car (not daily driven) I absolutely freakin' LOVE the results.

Headers would probably change that a lot, since some of the "punch" effect is due to the stacking of exhaust pulses in the manifolds as opposed to equal-length tubes. Catcons would quiet it and possibly make it a little raspier by smoothing the low-frequency pulses through the tubes Removing the H-pipe would likely make it drone at highway speeds. My concern in a car like a Crown Vic would be that even with the catcons, the other effects (and especially if it doesn't have a crossover or H-pipe) would make it drone too much for your taste at highway speeds. But honestly, I've had worse drone on other cars with similar exhaust and chambered mufflers, so I'm not really sure that's necessarily going to be better overall.

Modern muscle car exhaust systems have a whole lot going on *just* to get a little loudness without highway drone- look at the combination of resonators and mufflers on a Challenger, Mustang, or Camaro (not even considering the active exhaust dampers on SRT and Hellcat Challengers, Corvettes, etc.). And the biggest disappointment I see on the forums when people change exhaust systems is that it causes drone.



Thanks.

I'm not doing a system overhaul (it's in great shape, plus that's an expensive endeavor), just a muffler replacement. Retaining the stock piping, all 4 cats, resonators in the tailpipes...
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#4292756 - 01/03/17 11:12 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
vitez Offline


Registered: 03/29/16
Posts: 139
Loc: big sky country, Canada
I had a chambered Magnaflow on an Ford Expedition 5.4. It was nice and quiet at cruise but sounded great when you got on the pedal. I had Flowmaster 50 series on a Yukon 5.7 prior to the Expedition and the Magnaflow sounded definitely better.

OTOH I had some exhaust work done on a 1996 Jaguar XJ-R. It has a supercharged 4.0L straight 6 with a bizarrely complicated exhaust system: 2 manifolds (1 for 3 cylinders) feeding an exhaust pipe each to a pre-cat, which joint into one pipe to feed a main cat, then it splits into 2 again into a resonator each then 2 tailpipes. Sheesh. The pre-cats embolized into the main cat. We have no emissions testing here but visually they need to see a cat, so the muffler shop banged out the pre-cats and re-installed them, replaced the main cat with a glass pack muffler and reconnected it to the rest of the system. It passes inspection, and sound identical to before.

I said all this to suggest maybe a glass-pack isn't such a crazy idea. You already have 4 cats plus resonators so it's not like the muffler is doing most of the quieting.
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#4292860 - 01/04/17 06:50 AM Re: Magnaflow mufflers - Straight through vs chambered [Re: bdcardinal]
Cujet Offline


Registered: 02/15/03
Posts: 5820
Loc: Jupiter, Florida
Originally Posted By: bdcardinal
Straight through like a Borla sound the best on a mod motor IMHO.


Agreed. I also like the sound of the bigger (say 3") Walker Dyno-Max series of mufflers. Both the turbo and the straight through Ultra Flow.

FWIW, the Walker straight through "Ultra Flow" mufflers are the bargain of the century. The longer, the better and smoother the sound.

Walker makes a 24 inch long, 2.5" inlet and outlet, straight through welded muffler. It's sound is deep, strong and clean. Not hollow like a chambered muffler. Nice burble at idle, great bark at full throttle.



Check out this video for the sound of a modular engine with the Ultraflow muffler. Very nice indeed. He gets on it at the end.

https://www.youtube.com/watch?v=sQTcLG-m8Tk


Edited by Cujet (01/04/17 06:59 AM)
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#4292861 - 01/04/17 06:53 AM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
JustinH Offline


Registered: 04/17/04
Posts: 4348
Loc: Texas
I had a custom Bassani exhaust on a 96 Tbird with a Bullitt Mustang motor and vortech blower.

It sounded really nice.

A friend had the ultraflows on his Tbird with a GT motor and that sounded great also.

Not sure if the Borla setup is worth the cost.
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#4292936 - 01/04/17 08:42 AM Re: Magnaflow mufflers - Straight through vs chambered [Re: JustinH]
emmett442 Offline


Registered: 12/07/16
Posts: 29
Loc: Wisconsin
Originally Posted By: JustinH


Not sure if the Borla setup is worth the cost.


This is where I'm at with all of the cat-back offerings. Anything of quality is near $1k. Why should I replace the perfectly functional stainless factory piping when all I want is a little change in sound? Sure, maybe there are a couple of (small) horses to gain at WOT - but lets be honest here: the car is a slug with or without a cat-back. Unless it undergoes significant surgery, it always will be. On this car, I'm not willing to pay $1k for nearly in-detectable results that will only be noticed on a chassis dyno. On some of my others? Maybe. But not a Crown Vic.

The car is a cruiser. I love the sound of a V8 lazily motoring. I just want to be able hear it.
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#4292949 - 01/04/17 09:14 AM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
Bgallagher Offline


Registered: 04/17/12
Posts: 2652
Loc: Boston, MA
I too loved loud exhaust when in HS and now prefer nice, quiet OEM. In HS I had a first gen explorer with a Gibson exhaust and it sounded nice. Had a low rumble at idle and wasn't bad in terms of droning. Try youtube for crown vic aftermarket exhaust systems. I bet there are a bunch of videos with different types of systems.
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#4293314 - 01/04/17 04:11 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
440Magnum Offline


Registered: 02/01/09
Posts: 8497
Loc: Texas
Originally Posted By: emmett442
Originally Posted By: JustinH


Not sure if the Borla setup is worth the cost.


This is where I'm at with all of the cat-back offerings. Anything of quality is near $1k. Why should I replace the perfectly functional stainless factory piping when all I want is a little change in sound? Sure, maybe there are a couple of (small) horses to gain at WOT - but lets be honest here: the car is a slug with or without a cat-back. Unless it undergoes significant surgery, it always will be. On this car, I'm not willing to pay $1k for nearly in-detectable results that will only be noticed on a chassis dyno. On some of my others? Maybe. But not a Crown Vic.

The car is a cruiser. I love the sound of a V8 lazily motoring. I just want to be able hear it.


I put a Borla cat-back on my Ram pickup truck, even though it was expensive. I too just wanted a little more burble, but I also wanted dual side-exit exhausts to prevent burning anything I might carry on the hitch- like bikes or cargo on a hitch cargo platform. The Borla system had those features and sounds *perfect*, and should last as long as the OEM stainless system would have. But this is a fairly simple truck 2-into-1-into-2 system, and it replaced nothing particularly performance-oriented from the factory.

Would I do a cat-back on my SRT-8? No way. There's so much engineering in that factory system that I'd be foolish to think I could do anything substantially better with aftermarket parts.
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#4294597 - 01/05/17 11:05 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
wtd Offline


Registered: 06/25/02
Posts: 1704
Loc: southwest Mo.
I have a duel out the back Borla cat-back on my 98 chevy K1500 and it sounds good. It does have a little bit of drone though and I'm not sure what the design of the inside is like.

I have a single side exit Flowmaster cat-back on my 98 K3500. This uses their 50 series muffler which is not real loud but this is a chambered muffler and it doesn't have any drone.

I have a GT500 cat-back on my 2014 Mustang GT. The over the axle pipes have no resonators like the factory OTA pipes do and the mufflers are the same ones used on the 2011-2012 GT500 Mustang but made by Ford Racing. These are supposedly chambered mufflers but I don't know for sure. This system sounds awesome with no drone and in my opinion is the exhaust that should have come stock on this car.

I have liked the sound of pretty much every Magnaflow muffler that I have listened to so I don't think you can go wrong there.

Wayne


Edited by wtd (01/05/17 11:06 PM)
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#4294650 - 01/06/17 02:14 AM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
carloz Offline


Registered: 01/03/17
Posts: 19
Loc: Fl
A local tuner told me that a straight-through design can give a bit more power than a chambered one, though the gain may not be too noticeable.

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#4294769 - 01/06/17 08:32 AM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
DriveHard Offline


Registered: 11/24/03
Posts: 753
Loc: Middle of Iowa
I'm a huge fan of the Hooker Aerochamber muffler. It is a straight through design chambered muffler. Aggressive sound, but less drone that many others. The GM 6.2L is known for being hard to quiet down. I have tried the following on my truck:

Banks muffler straight through with packing type (way too loud)
Flowmaster 50 series big block - drone on highway, and noticable performance loss
aeroturbine with resonator - drone on highway, and generally didn't like the sound
Hooker Aerochamber with resonator - aggressive sound, least drone so far, best performance as well

Do some searching around on forums and you will be hard pressed to find any negative comments about the Aerochamber. Do some youtube listening as well.
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#4295100 - 01/06/17 03:39 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
HosteenJorje Offline


Registered: 05/26/14
Posts: 1748
Loc: Columbus,Nebraska
Leave the OEM muffler on it and give the public a break. Why individuals think they need to make noise with a car is beyond me. frown

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#4295229 - 01/06/17 06:52 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
mlatour Offline


Registered: 05/25/05
Posts: 150
Loc: near Montreal, Canada
A while back when I drove a 2004 Dodge Ram 1500 4.7 liter V8
I had a front to back custom mandrel bent true dual exhaust with an 'X' crossover
and experimented with a few mufflers in the following years.

-Gibson
Quiet but were very restrictive at higher rpms versus the others listed below
(perhaps I didn't choose the proper size for my application)

-Magnaflow / straight glass packed design
Felt like the best top end HP, decently quiet a first but they do get louder over time, bad drone on the Hwy.

-Flowmaster 70 series / chambered design, one of they're quietest mufflers.
Best overall performance, quiet at idle, sounds 'just right' while accelerating, no drone at highway speeds.

But now I'm into leaving my vehicles stock and quiet,
as HosteenJorje suggested above, I've come to despise noisy cars/trucks driving by my house.


Edited by mlatour (01/06/17 06:57 PM)

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#4296028 - 01/07/17 05:45 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: 1977c10phxdriver]
c502cid Online   content


Registered: 01/17/03
Posts: 866
Loc: Elizabeth. Colorado
Originally Posted By: 1977c10phxdriver
If you have a shop in mind to do the sale and install, ask if they will hang each on (not welded) and let you listen on the rack. I"ve done it before, usually not a problem.


^^this^^
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#4296079 - 01/07/17 06:37 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
mjoekingz28 Offline


Registered: 11/21/07
Posts: 3587
Loc: Mississippi
Don't forget that exit pipes and tips can affect power, sound, and DRONE (not the new flying kind).



Just something to think about

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#4296218 - 01/07/17 08:38 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
04SE Offline


Registered: 05/04/07
Posts: 758
Loc: IL
Originally Posted By: emmett442
Anyone have experience with both? Tough shopping for mufflers when you really don't know what you're getting till it's installed. I've heard loud chambered, quiet straight-through, and vice versa... so I really don't know what to expect when it comes to these specific models.

Like the rest of the world, I'm simply looking for a little idle burble, WOT throat, and highway silence. Minute, insignificant performance changes are not a concern - only looking for sound.

Considering 4"x9"x18" in either configuration. To avoid any unnecessary discussion (other brands, other sizes), only one of these two I've linked are in the running:

Chambered
Straight-through


Just an FYI, I have a 2010 CVPI and am on my 4th exhaust configuration:

1. factory - just plain boring
2. cut factory mufflers out and welded in straight pipes - the drone was RIDICULOUS
3. cut the straight pipes out and welded in glass packs - the drone was annoying
4. cut out the glass packs and welded in a set of magnaflows - maybe just a bit louder than stock. I have the exact same magnaflows (11254) you are considering. They are a perfect fit when you cut the OEM mufflers out. Seriously, it is NOT much louder than stock at all - pretty disappointing.

EDIT: I see now that you have resonators on your LX. Honestly, it will probably be OEM quiet with the magnaflows. My CVPI didn't come with the resonators. Just trying to help you not have 4 exhaust setups like I did and still be disappointed.


Edited by 04SE (01/07/17 08:46 PM)
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#4296295 - 01/07/17 09:49 PM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
HerrStig Offline


Registered: 08/24/11
Posts: 8649
Loc: Boston, MA
Wouldn't hurt to contact Magnaflow and see what they suggest.

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#4297290 - 01/09/17 12:40 AM Re: Magnaflow mufflers - Straight through vs chambered [Re: emmett442]
AdRock Online   content


Registered: 06/05/09
Posts: 890
Loc: Texas
Check out the Thrush Turbo mufflers. They're cost effective, well made, and will give a nice tone with all the rest of the stock components in place. I've got a buddy with that setup on his Crown Vic and it's a nice, low, throaty tone and doesn't drone on the highway. Just a little bit louder than stock
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2014 Ford F150 STX 5.0
2002 Ford Mustang GT 4.6
1995 Ford F150 5.0
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