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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: Pntastar69]
#1102163
10/27/11 12:34 PM
10/27/11 12:34 PM
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Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
DPelletier
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
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I have the Dynomax Ultraflo's and love the sound, no drone BUT the big reason to run them is performance; they are THE choice of the top running cars at Pure Stock for a reason - nothing flows any better. Flowmasters flow like crap. If the Magnaflow is a similar design, it probably flows good too.  Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: Locomotion]
#1102166
10/27/11 08:55 PM
10/27/11 08:55 PM
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Joined: Jan 2003
Posts: 1,221
Jarrettsville, MD
tywebb2
OP
super gas
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OP
super gas
Joined: Jan 2003
Posts: 1,221
Jarrettsville, MD
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Thanks for all the responses. I am leaning toward the ultra flow after reading dpellerier's comment that they are the choice of top running cars at Pure Stock. Do you think I would pick up anything in et at the track by switching from the flow masters to the ultra flows? Having it I the loud side is ok with me.......I would just like to lose the resonance.
'72 440 Cuda
11.673 @ 115.91 w/1.663 60'
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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: tywebb2]
#1102167
10/27/11 11:46 PM
10/27/11 11:46 PM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Quote:
Thanks for all the responses. I am leaning toward the ultra flow after reading dpellerier's comment that they are the choice of top running cars at Pure Stock. Do you think I would pick up anything in et at the track by switching from the flow masters to the ultra flows? Having it I the loud side is ok with me.......I would just like to lose the resonance.
I can tell you this. My sons Dart has Flow Masters on it and he picks up 2 tenths when he uncaps it ! I like the Ulta-Flows because when you look inside them you can see they are straight thru so they have to be a good performance muffler. I have never uncapped my 63 so I cant really tell you if the Ultra-Flows will pick up uncapped but if it does it cant be much. Like I said about my boys Dart picking up 2 tenths when uncapping the Flow Masters as when you look inside the Flow Masters you cant see straight thru like the Ultra-Flows. Ron
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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: tywebb2]
#1102168
10/28/11 12:00 PM
10/28/11 12:00 PM
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Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
DPelletier
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
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Quote:
Thanks for all the responses. I am leaning toward the ultra flow after reading dpellerier's comment that they are the choice of top running cars at Pure Stock. Do you think I would pick up anything in et at the track by switching from the flow masters to the ultra flows? Having it I the loud side is ok with me.......I would just like to lose the resonance.
Thanks for the vote of confidence. There are several flow charts floating around the internet, but the upshot is that the Ultraflows flow just as well as straight pipe (99%), whereas the Flowmasters are amongst the worst. I don't remember the actual numbers, but they were around 60% or so depending on the size, etc. Before purchasing my system, I spoke to several of the Pure Stock legends including Bob Karakashian and Jim Spetzman and a couple others.....they all advised me to use the Ultraflows and told me most of the fast cars had them.
As far as you picking up ET, it is certainly possible though it depends on your current build. Another thing most people fail to consider is that the entire exhaust system needs to be looked at as whole. I firmly believe that my HP manifolds, 2 1/2" TTI and Ultraflow setup flows better than a cheapy set of headers with the stock 2 1/4" compression bent tubing and stock mufflers.
A member here with a '70 440-6 RR picked up something like 0.4 - 0.5 seconds doing a swap to the same setup I'm using. I forget his name here (maybe he'll chime in) but he has the ex-university test car.
Dave
On edit; his name is Paul IIRC? don't remember his Moparts handle.
Last edited by DPelletier; 10/28/11 01:45 PM.
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: Ronnman]
#1102170
10/28/11 01:43 PM
10/28/11 01:43 PM
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Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
DPelletier
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
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Yeah thanks, that's one of them. I like it 'cause it has db ratings included;  Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: DPelletier]
#1102171
11/24/11 10:01 AM
11/24/11 10:01 AM
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Joined: Jan 2003
Posts: 1,221
Jarrettsville, MD
tywebb2
OP
super gas
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OP
super gas
Joined: Jan 2003
Posts: 1,221
Jarrettsville, MD
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I finally pulled the trigger on the Dynomax Ultraflows and got them installed last weekend. They sound much better than the 40 series Flowmasters I had on the car. It seems to have a deeper tone to it and when I open it up it sounds sweet! And that annoying resonance is gone too. http://www.youtube.com/watch?v=1QNcY7RnTdM
'72 440 Cuda
11.673 @ 115.91 w/1.663 60'
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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: DPelletier]
#1102174
11/25/11 02:19 AM
11/25/11 02:19 AM
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Joined: Jan 2003
Posts: 8,392
Highland, MI.
Sunroofcuda
master
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master
Joined: Jan 2003
Posts: 8,392
Highland, MI.
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The Magnaflows are a lower priced knockoff of the Ultra Flows, but I think the Dynomax are better built. I've heard of quite a few people running the Magnaflows where the outer skin of the mufflers starts splitting & cracking, plus lots of people complain about the Magnaflows having a wicked drone in the 1800-2300 RPM range. Flowmasters are NOT what you want to run if you want a really free-flowing muffler.
Besides the mufflers I make, I do like the Stainless Ultra Flows. I'll be running a set of prototype stainless Super Turbos we built while I worked for Dynomax 11 years ago. These are reverse flow to go on my AAR. We flow tested an NOS muffler I have for the AAR-T/A & it tested at 175 sCFM. The ones we built for my AAR flow 375 sCFM. I can't wait to hear them!
No Man With A Good Car Needs To Be Justified
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Re: Which Mufflers...Dynomax Ultraflo or Magnaflow
[Re: DPelletier]
#1102175
11/25/11 05:32 AM
11/25/11 05:32 AM
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Joined: Jan 2003
Posts: 5,304
Land 'O Lakes
RoadRunnerLuva
master
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master
Joined: Jan 2003
Posts: 5,304
Land 'O Lakes
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Quote:"A member here with a '70 440-6 RR picked up something like 0.4 - 0.5 seconds doing a swap to the same setup I'm using. I forget his name here (maybe he'll chime in) but he has the ex-university test car.
Dave
On edit; his name is Paul IIRC? don't remember his Moparts handle."
David Hakim: a white '70 RR from Michigan...
used to work with him at Mopar Performance parts division years ago.
Last edited by RoadRunnerLuva; 11/25/11 05:36 AM.
Plymouth Makes It!
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The only downside was having to take 60lbs out to bring the car weight back to the minimum race weight. 
