Mufflers

[Nacho-RT74]

Hi Guys... I don't remember If I asked this in the past, but wondering. New year is coming down so Will have access to buy some stuff from USA again. I'm practically done really just some extra details.

My stock mufflers are allmost done, making some weird noises, so will need to replace them. Need some advices about.

I'm already with 2.5 pipes from end to end, dual without any H or X conection.

I'm searching fro good relioable and cheap options to get a nice "round" sound, nothing like a "slappy" sound, Nothing disturbing but deep and nice sound atht makes feel you are on a muscle car.

the engine setup as many of you knows WILL BE with 280/474 MP cam, stock HP manifolds and some porting job on heads.

PPl down here is allways toward to flowmasters, and in fact you can find those locally ( not cheap, very expensive really ). A guy is offering a series 40 set that he just installed once and run couple of times but had to remove for some reason ( dunno why ). Some ppl advices me better on series 50 or even 70. But still dunno about FM

what could I get on a cheap line with the kind of sound I'm searching? I dunno if compare it with some sound like the Modern mustangs, but of course more to classic mopar sound.

thanks.

[R2]

2 chamber, 40 series flow-masters are loud..... all depends on the sound you are looking for.....I actually like them,,,,but they can be a bit obnoxious/loud inside the car.
I have some dynomax muff's on the car now,,,,


here is a little clip i found..........( not mine )


http://www.youtube.com/watch?v=rA3bL3cTQws&feature=related

http://www.youtube.com/watch?v=zgz3x1w71qs&feature=related

http://www.youtube.com/watch?v=YqMgqRWb0kA&feature=related

[Cooter]

IMO, There's only one muffler...Flowmaster...In any flavor, they are the muffler..I agree that they have been overdone to a degree, but I just finished a RoadRunner for a customer in Wis. and he ask'd if I could "try" my 2 Chamber 40 series on the cars 3" exhaust to see if he liked them...
I fired it up with them cobbled on there and he said it was a little on the "loud" side for his taste...We stuck the TTI DynoMax mufflers on it and he seemed happy....Got a call from him the other day and told me that he thought I was right and he just had a set of those "Too loud" Flowmasters installed anyway cause the DynoMax mufflers didn't "bring the Noise" Like he actually wanted once the car was home..I will say the the DynoMax mufflers didn't sound bad for a "Change", but they just ain't Flowmasters....

[greenpigs]

Some of what I have seen say flo masters are not the best flowing muffler. I got some Dyno Max ultra flo's and have not fired it up yet but BacknBlack posted a link of his Charger with them. I'll try to find the link[/color].//www.youtube.com/watch?v=rkwtlBhWDc4]http://www.youtube.com/watch?v=rkwtlBhWDc4 Sure its just idling but it sounds good...tone and loudness.

[FLG]

After switching from 40's to Pypes violator series ive been very happy. No annoying drone!!

They seem pretty quiet at idle to me, but really wake up under some throttle.

http://www.youtube.com/watch?v=UKxQuMaDIEQ

Ill try to get a higher quality video soon. Damn snow!

[miller]

Here is a vid of my new exhaust system, headman headers, 2.5 Dynomax ultra flow, and a universal summit x pipe. I think it has a burly but not screechy tone. It may be too quiet for some peoples tastes though, it does get loud after the first couple trips out.

http://www.youtube.com/watch?v=AxN23wfw-Zs

[R2]

Are you guys running tail pipes,, ,all the way out to the rear of the car/bumper ?,,, , or are you running "dumps" under the car,,,,fore of the rear end ?

I have dynomax ultra-flows now,,,,with a TTI 3" tail pipe,,,,but my ultraflows are going "bad",,,ie,,,the casing is coming apart,, ,and they are now leaking H2O, ,,etc,,,from the middle of the muffler....so,,,they need to be replaced,,,,,

Just wondering if i want to run tail pipes any more,,,,( i had dumps on there in the past,,,, ),,,, it is impossible to get the exhaust off to work on the car,,,everything is welded up,,,

[greenpigs]

No tailpipes and 50/50 if I get some.

[R2]

What are you guys running for inlet / outlet ?? on your muff's,,,ie,,,,

is the inlet offset,,,and the outlet centered ?

is this WITH tailpipes ?

thanks,

[greenpigs]

Offset inlet and offset outlet and its close to third member.  I have over a foot clearance at outlet of mufflers. 

[Ronnman]

Another thing to consider is flow.  See attached chart for comparisions.  My experience is that every car fitted with Flowmater 40 series had a bad drone at 1500 to 1800 rpm.  That itself is enough the give you a headache while driving for over 15 minutes.  Here is a short video of the interior sound  http://www.youtube.com/watch?v=NFQ2N0mBct8
Ron

[R2]

YIKES............

what is with the flow numbers on the Flowmasters ( in the 50% range ??,),,,that sucks compared to the dynomax .( in the high 90% range)....  that was a eyeopener...

I was considering a change over to the flowmasters,,,not sure now........may just replace my Dynomax's.... 

[b5blue]

This is like beer or booze it's all subjective...the variables in car set up and use are infinite. Myself for a daily driver that may take extended long range trips lasting hours.....bone stock with the thickest pipe available hung the factory way for durability....if any mod...X pipe as it seems a +. Just my    

[Ronnman]

Firefighter3931 (Ron) recommends the ultraflow welded mufflers.  You are right mufflers are very subjective.  I listened to a lot of youtube videos, peoples cars and educated myself before I decided on the Ultraflow welded mufflers.  I was leaning toward the dynomax super turbos but chosed the Ultraflows because of their higher flow numbers and better construction.
Ron

[Cooter]

It kills me that some want Awesome acceleration, but don't want to drive 45 MPH all the time...They want that "killer" sound, but don't want to deal with interior resonance...I've found that one thing positive, usually leaves a couple things for a trade off.....Yes, Flowmasters have a drone at 1800 RPM's....This is only if you are running 2.97 gears at 65 MPH....If you have ANY gear in the car at all, you will be above 1800 At cruise anyway IMO...


I don't know bout you guys, but I actually WANT the person in the other lane to KNOW thta there's an engine to match the reputation these cars have in the public's eye when they pull along side it at 1800 RPM's....There's something to be said for "Sleepers", but face it, when you have "Paid the cost to be the boss" with a 540 Cu.IN. engine, I'd think you'd want to be a little obnoxious with the noise when that soccer mom pulls along side and says "Look kids, there's one of those cars like Daddy wants to play with one day"...

[Ghoste]

In that case why not just run open headers all the time?  I like the Dynomax myself and I love the fact that they can offer better performance without a drone on the highway (because I don't just drive around town looking for soccer moms to offend with my loud idle).  Of course I don't have 2.97's, I run 4.10's in the car so that could be why there is no drone? 
My cars sound is more than easy enough to notice without sacrificing performance and I'm not out driving around hoping everyone is looking ate anyway.  The only one I worry about impressing is myself.

[grdprx]

Are you guys running tail pipes,, ,all the way out to the rear of the car/bumper ?,,, , or are you running "dumps" under the car,,,,fore of the rear end ?

I have dynomax ultra-flows now,,,,with a TTI 3" tail pipe,,,,but my ultraflows are going "bad",,,ie,,,the casing is coming apart,, ,and they are now leaking H2O, ,,etc,,,from the middle of the muffler....so,,,they need to be replaced,,,,,

Just wondering if i want to run tail pipes any more,,,,( i had dumps on there in the past,,,, ),,,, it is impossible to get the exhaust off to work on the car,,,everything is welded up,,,

I had wondered if there was any advantace to the dumps, or running a tail pipe.  Is there an advantage?   Also, are Magnaflow mufflers not the muffler of choise now?  One of the local exhaust shops actually suggested buying the mufflers myself, said they don't get the discount they used to, so I'd be paying their markup if I bought from them...  Nice of them suggesting that, I thought!

[Cooter]

Now you want to talk about LOUD, not to mention illeagal for State inspection here in VA, Running "Dumps" right behind the mufflers makes the mufflers LOUD!

As a rule of thumb, I've found the longer the piping Behind the muffler, the "Raspier" the exhaust tends to be...I have 2 Chamber Flows on Christine with at least 6 FT tailpipes and it sounds like a set of Glasspacks on it...

[R2]

grd,,,,
I usually BRING everything to the muffler shop that i can,,,,and have them install it,,,usually you can find/get the mufflers,,etc,,,yourself cheaper......

Not sure if there is a "advantage" to running dumps,,,over tailpipes,,,, the tailpipes will quiet it down,,,but not sure if there is a significant performance difference.....

[Al]

Got Flowmaster 40 in my 383 Charger. Yes there is a drone, noticeable but not obnoxious. But there is also the sound: pure beasty power like King Kong roaring. Very noticeable. I wouldn't change them for any other muffler.

[CB]

Got Flowmaster 40 in my 383 Charger. Yes there is a drone, noticeable but not obnoxious. But there is also the sound: pure beasty power like King Kong roaring. Very noticeable. I wouldn't change them for any other muffler.

same here
wondering if I could go for the side exhaust or dumps, I need to loose the ugly gay tail pipes on mine

[Nacho-RT74]

interesting opinions here... thanks.

Yes I know the noise is quite subjective. Recorded sound is also hard to define. Lot of variables there to completely trust on that, but is at least an aprox

are you pro FM 40s users guys talking with headers or HP manifolds ? I read about 50 series is quite the same than 40 series performance but quieter

I'm worry about anoying noise inside cab and at iddle and warming engine moments outside the cab ( living on a building thats a big deal ). Don't care too much about noise above 2000-2500 RPMs for a while is comfortable inside the cab.

I don't care muscle car sound warming engine or idle but not anoying...

I know is hard to get everything there in one muffler model

of course 2.5" pipes, with center and offset outlets.

I wasn't thinking on X or H deal really

[Nacho-RT74]

is there somebody with Series 50 delta flow on a mild BB ( not RB ) or similar in another brand, to show a clip ?

I have found at Youtube some stuff, but all 440s, some with TTIs and 3"... and a truck with 400 but dual in/out setup

[Nacho-RT74]

does somebody know about SDT Edelbrock mufflers ? ( summint have them lowered from $144 to $90 )

[Nacho-RT74]

wow... Jones mufflers sounds good... well in a very diff car too

http://www.youtube.com/watch?v=hdKusQlQf-k