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New mufflers : Dynomax Ultra flow. Do you like them ?
#1
Hey guys, I wanted to order Flowmaster 40 mufflers for my Mustang but I have an opportunity to get a set of brand new Dynomax Ultra Flow mufflers instead for a really cool price.
My engine is a 351C stock H-code with Hooker headers and Pypes exhaust (with X-pipe). I currently have Pypes Violator mufflers that are really good, but that's not what I wanted at first.

Do you guys used or heard those Dynomax Ultra Flow mufflers ? I know they flow very well but I'm not sure I'll like the sound of them.
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#2
Here you go sound kinda quiet

http://www.dynomax.com/soundsofdynomax.php
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#3
reports say that flowmasters are actually very restrictive and just sound nice.

anything straight thru should be the hot ticket.
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#4
I was watching an episode "Gearz" on YouTube. They were saying that baffle style mufflers just aren't as efficient as the "straight through" such as Cherry Bombs and Magnaflow.
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#5
cazsper;88765 Wrote:I was watching an episode "Gearz" on YouTube. They were saying that baffle style mufflers just aren't as efficient as the "straight through" such as Cherry Bombs and Magnaflow.

LOL at the end of his show when they run the credits they are also a sponsor. you are talking tenths at the most, you will never see it on the street. Sound is another thing now.
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#6
xoliex;88620 Wrote:reports say that flowmasters are actually very restrictive and just sound nice.

anything straight thru should be the hot ticket.
Here's my report:
The prevoius owner of my car had quiet stock type mufflers on. The first thing I did
was swap the stockers for Flowmaster 40s. With just muffler change, it felt like it picked up about 15HP, very noticable power increase.

1971 Mach1
351C-4v
C6 is history-->>now TKO-500
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#7
Mufflers may allow you to free up restrictions and increase horsepower, but "feeling" the additional horsepower is mostly just in your head

When shooting guns, the muzzle report will "trick" you into feeling more recoil.

Loud guns don't necessarily really kick any harder than quieter ones, but I will bet dollars to donuts that if you take a dozen shooters and have them shoot guns with identical mechanical recoil, all will say the louder ones kick more.

Muffler changes may increase horsepower, they may even increase it by 15 horsepower under the circumstances described. But with all due respect, you cannot "feel" a 15 horsepower increase in a 3500 pound vehicle. 0-60 time, 1/8 mile time 1/4 mile time, top speed, gas consumption, and many other things can be measured and will help to identify true horsepower increases, but unless you are sitting on a dyno, your ass can't tell that there was a 15 horsepower gain.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#8
I don't know... when I put a K&N 'cone' style filter on my '95 Civic VX, it got a little louder as the throttle opened further, and my 'ass-dyno' registered a noticeable improvement. Of course, we're talking the difference between 91 and 95 horsepower on a 2100-lb econo-box.

Just to be safe, slap a couple of name-brand performance stickers on it somewhere and it'll increase it to 25 hp. LMAO!

Eric

[Image: mach1sig2.gif]
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#9
Tnfastbk;88801 Wrote:
cazsper;88765 Wrote:I was watching an episode "Gearz" on YouTube. They were saying that baffle style mufflers just aren't as efficient as the "straight through" such as Cherry Bombs and Magnaflow.

LOL at the end of his show when they run the credits they are also a sponsor. you are talking tenths at the most, you will never see it on the street. Sound is another thing now.

I just saw a post about "posts" from Tn and it said 6,006 post also.
Is that as high as the counter can go?

About mufflers, need some exhaust work and have glass packs now.
I like the way they sound, but there is no glass left.

mike

[Image: 1_11_11_13_11_50_27.png]
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#10
Tnfastbk;88801 Wrote:
cazsper;88765 Wrote:I was watching an episode "Gearz" on YouTube. They were saying that baffle style mufflers just aren't as efficient as the "straight through" such as Cherry Bombs and Magnaflow.

LOL at the end of his show when they run the credits they are also a sponsor. you are talking tenths at the most, you will never see it on the street. Sound is another thing now.

Well, it was an episode about Cherry Bomb mufflers. But logic would tell you the muffler with baffles (that block and redirect) the flow would be more restrictive than a system that doesn't.
While working at APEX Motorsports in Santa Clara CA, a mustang club came in with their '03/'04 Mach-1's and did an exhaust comparison. They had FlowMaster, SLP, Magnaflow and two others I don't recal. The test car was stock except for shorty headers and a Bassani X-pipe. After they dyno'd all the mufflers, the magnaflow made the most power with 6rwhp more than the next.
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