Shakerhood said:Flowmasters have NOTHING inside them that are going to break in! It is a welded case with 2 or 3 Chambers inside with NO Packing whatsoever! Unless you have little Gremlins inside your mufflers that fire up a blowtorch and are burning holes through the Chambers, then your sound is NOT changing!
CoupedUp said:All mufflers "break" in after use ... even the factory mufflers.
Carbon build up adds pressure ... exhaust volume becomes more concentrated or channeled in a muffler.
MAC mufflers are conciderably smaller (volume) than a factory piece. The alloy used as well as the size creates the aggressive sound.
Heat distortion contributes as well ... it weakens the aluminuized wall in the flow path areas. (The "drone" becomes more noticeable)
To the original poster: your factory mid-pipe is your deadener right now .. the mufflers will get louder a bit though.
For the record: a decent hi-flow-cat'd-mid-pipe will sound throaty as well
5.02GO said:I have had flowmaster 2 chambers on my car for about 9 years now. They DO change sound.
My friend had a 92 gt. He had flowmaster 2 chambers on his. I decided that i wanted the same sound.
When i first put the flows on and started it, i was like "its quiet". "Where is the deep tone at?"
I called my friend and he came right over. We parked them side by side and listened to them. His was deep flowmaster sound. My wasnt. It still sounded like i had stock mufflers on. He said "it will change", "mine did the same thing"..............Sure enough, the did.
Like the others have stated, they CAN and WILL change sound.
Why?--I dont know, I dont care.
Actually, i am thinking of getting the 50 series deltas cause i am getting a little tired of the "drone" at 60mph.
In town driving or at idle. You just cant beat the flowmaster tone.
Shakerhood said:Of Course Factory Mufflers will get louder as they are packed with fiberglass which would burn away! Again there is welded metal pieces inside of a Flowmaster muffler that seperates the Chambers, it would take intense heat to distort the metal as it is welded to the top and bottom of the muffler case. If carbon build up was the cause for loudness then it would continue to get louder ever single time you drive it, so my Flowmasters have been on for 5 years now, so by your theory they should be so distorted and full of carbon that they should sound like a Jake Brake on an 18 wheeler! They sound the same as they did 5 years ago!!!
Shakerhood said:Which one of you went to go out with a friend, "me or I"? If they were not around your car for a month, how could they even notice if it was louder unless it was such a drastic change, in which you say its not?
CoupedUp said:Come on dude .. you think the carbon continues to build up in them until they're plugged as a soild block ... it burns.
Ever seen a cat glow ... it isn't from a "lack of heat".
I know you just don't want to admit you're wrong ... that's okay ...
You're right. Most of us just tapped our red slippers together and hoped for the change ... but don't worry, we'll be back in Kansas in no time.
Darkwriter77 said:Majority or not, I still have yet to read anyone in this thread that's coughed up a legit explanation for HOW exactly Flowmasters CAN change in sound without a physical change in baffle shape and/or exhaust leaks (at connections and/or rust holes). "They just do" is not a much of a mechanical theory.
Seriously, if I tried to sell, say, an '05 Mustang GT to someone and told them, "This thing spanks a Ferrari's arse the quarter mile!" and when asked how, I reply with, "Well ... it just does!" then I seriously doubt I'd be making a $28k sale that day ... unless the buyer is that much of a sucker. Now, if I went on to explain that, yeah, it can be done with a few thousand in bolt-on mods here and there (say, a blower and/or some juice, for starters), then I'd have something to support such a claim.
So then, maybe I am making "the most retarded statement, EVARRRR!" by saying it, but I'm sticking with it 'till someone proves it otherwise: Flowmasters are what they are, right out of the box. Any percieved change in sound is either subjective opinion and/or something caused by another variable totally independent of the mufflers, themselves.
Besides ... I'm not a majority type person. Bah ... conformists!
Shakerhood said:I would say that your cars sound different because you probably do not have the exact same system. If his mufflers are 9 years old and yours are new the has probably been several CIDs over the years. Maybe you can wave your magic wand over my mufflers and make them change sounds for me! A muffler with NO PACKING INSIDE has nothing to break in, its not going to change! The heat thing is a bunch of BS too as my tailpipes still have the stickers from Flowmaster on them, so theres not even enough heat to burn stickers off, or sure is hell is not going to distort welded metal!
Shakerhood said:No I was trying to prove a point of how silly your theory of Carbon build up is. Of course your Cats have high heat, they are ment too, but the further aft you go in the system the less heat you have, as I have said prior the stickers are still on my tailpipes 5 years after I installed the system.
Paul Perreca said:I'm pretty sure, ALL muffler grow louder with miles... It's not that its cheap metal or what not, it's that they break in, they get used to the way the exhaust flows through them, all metal expands and contracts due to heat and cold conditions, when they expand and contract so many times, they change shape, and they change sound considerably,
Mustang5L5 said:Bingo, the hot/cold cycles tend to change the properties of the metals inside to make them resonate more.
My flows took about 2-3 weeks to really get loud
emagdnim said:I agree Shakerhood its all in everyones imagination after a few weeks you realize how loud it actually is!
Shakerhood said:..... I called Flowmasters Tech Department, remember these are the people that design, manufacture and test these exhaust systems. I was told the sound of a Flowmaster WILL NOT change in sound over its life. Every Theory that was posted on here was completely debunked by the Tech Department!
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