I have Flowmaster series 40 mufflers on my '72 440 Cuda and hate the resonance at low speeds. I was thinking about switching to Dynomax Ultra Flo or Magnaflow mufflers. Also read somewhere that the Pypes mufflers were a lot like the Magnaflows but less $$$. What mufflers are you guys running and how do you like them.

I am currently running Magnaflows on a 70 440 'Cuda and really like them. 2.5" system though. If you're running a 3" that could be a problem.
No drone, not too loud but still a bark when you step on it.
Like them better than the Dynomax's I ran on a different 440 Cuda

Not a big fan of my Ultra Flows. 3" exhaust with x pipe on a 73 charger. BIG time drone between 2100-2400... Just my setup I suppose. Will be going super turbos next time. But they havent rotted or broken baffles like all the chambered mufflers ive tried have.

I normally run Ultraflos but I don't think there is much difference between them as they have the same basic design. Not much that has lower back pressure than the Ultraflos. I think the Magnas are similar.

I have a 3" exhaust with x-pipe and tailpipes exiting through rear valance if it makes a difference.

i have the hooker erouchamber muffs for my dart

Dynomax are the toughest and best sounding mufflers i have ever owned at least in my opinion!

I have a complete 3 inch X pipe TTI system on my Challenger with Magnaflows,zero drone, sounds great but it is Not Quiet.

Hooker Aero Chambers

I have a 3" X pipe system, turn downs after the axles, and 3" Magnaflows. No drone, not overly loud at idle and cruise, but barks when the pedal is down.

I made a little comparison video a few years back when I had switched from Flowtech afterburners to Magnaflows. The afterburners did have resonance, but that was gone once I installed the Magnaflows. The afterburners did have a cool classic sound though.

http://www.youtube.com/watch?v=-vc2zqjSTjs

I Like the sound of my Magnaflows (3") I would think the Dynomax are similar, they are close in design. i like the stainless steel part...

Hey Flowmaster Is the best ! I have them on all of my Mopars even my new dodge truck, 40,s with 3" x pipe 2,1/2 x pipe . New Dodge Truck 50 with stock 3" thats my

I have a set of 3 inch Mganflows on my Duster mounted at the rear bumper, usea set on yours like the factory resonators

I have a set of 3-1/2" ultra flows with an X-pipe. I love the sound.Dave

you will be able to hear my setup on video.

http://www.youtube.com/watch?v=W1zMriXY5Ik&feature=email


511 hemi 3.5" X 3" x pipe with super turbo under the rear seat and Ultraflows back by the tank.

I have TTI W2 headers and 3" through the dynomax super turbo mufflers and 2 1/2" tail pipes I have a drone at 25-35 MPH. I am think that the 1 7/8" header may be part of the problem. I am installing 2 1/2" Summit 12" glass packs in the tail pipes. I guess I am too old for that much noise. It is quiet above 35 MPH, but I can't stand the noise around town. I hope I don't lose the bark when I stand on it.

my coronet has a full 3" system w/hpipe and ultra flows. my dart had 2.5" system w/ xpipe and pypes race pros(dumps in front of the rear) both of them sound similar, no resonance and not to loud/obnoctious. both mufflers are the same in design.

I'm running Dynomax on two cars. The first is a 2.5 inch TTI system from stock 440 manifolds and H pipe. It has the dreaded drone at 45MPH or around 2200 RPMS. I get by that speed quickly but should fix it. The second is a total TTI system on a 440, 2" headers into a 2.5 inch system H pipe. This one sounds great at all speeds and have lots of people commenting on how good it sounds. I also run the OTP electric cut-outs on this one, they're a blast! I terrorize the cheby neighbor all the time!

I'm runnin the Pypes Street Pro's. No drone at all.