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Old 03-31-2012, 12:14 PM   #1
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Single in dual out muffler?

I've asked a few exhaust shops and they all say you can't put a single inlet dual outlet muffler on a v6, why not? I don't have the Money for true duals do this would be perfect, does anyone have this or know why it won't work?
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Old 03-31-2012, 12:25 PM   #2
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Quote:
Originally Posted by Surffer227
I've asked a few exhaust shops and they all say you can't put a single inlet dual outlet muffler on a v6, why not? I don't have the Money for true duals do this would be perfect, does anyone have this or know why it won't work?
The thing I can think of is the way they would have to bend the pipes for the tails , the bends would b so sharp that I could see it causing a back pressure issue , exhaust is designed to flow as straight as possible with the least amount of bends in the pipe.
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Old 03-31-2012, 01:24 PM   #3
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Re: Single in dual out muffler?

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I've asked a few exhaust shops and they all say you can't put a single inlet dual outlet muffler on a v6, why not? I don't have the Money for true duals do this would be perfect, does anyone have this or know why it won't work?
Evidently it is because "they can't".
I had a teacher years ago who always said, "Cain't never could do nothing."
And it must be true, if they say they cain't, then they sure cain't do it.


There is no reason this couldn't be done and I think it's a good idea, which will save some money over using two mufflers.
Just measure and map out where the muffler will physically fit, then figure out how you will run the pipes. Simplicity in itself for a good muffler shop.
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Old 03-31-2012, 01:27 PM   #4
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Ok, thanks, I'm gonna keep looking for some shops,
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Old 03-31-2012, 01:38 PM   #5
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Re: Single in dual out muffler?

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Ok, thanks, I'm gonna keep looking for some shops,
If you have a place to work, consider buying a few tools and a small MIG welder.
Then when the project is completed you will have the tools and welder left over instead of lining someone else's pockets with your money.
You can get exhaust piping and bends from almost any auto parts store.
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Old 03-31-2012, 01:51 PM   #6
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If you really want the true duals just watch craigslist. I've seen numerous true dual pipes that you can pick up cheap. And mufflers too. But the dual outlet would be tough to do but not impossible. I can see alot of sharp bends that could restrict the flow in it though
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Old 03-31-2012, 02:38 PM   #7
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Re: Single in dual out muffler?

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If you really want the true duals just watch craigslist. I've seen numerous true dual pipes that you can pick up cheap. And mufflers too. But the dual outlet would be tough to do but not impossible. I can see alot of sharp bends that could restrict the flow in it though
You'd just have 2 more bends to get the outlet connect to the far tailpipe.
I don't think it would be a big issue on a V6, especially if you were using 2.5" tail pipes.
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Old 03-31-2012, 02:48 PM   #8
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Well even if they were restrictive the exhaust will flow more on the side of least resistance
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Old 03-31-2012, 02:51 PM   #9
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Re: Single in dual out muffler?

Like this.
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Old 03-31-2012, 03:40 PM   #10
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Quote:
Originally Posted by Surffer227
I've asked a few exhaust shops and they all say you can't put a single inlet dual outlet muffler on a v6, why not? I don't have the Money for true duals do this would be perfect, does anyone have this or know why it won't work?
I dont see why not?...I go to Merlins for my exhaust work because I know the owner...I have dual exhaust (single in dual out) on my v6 camaro flowmaster 40 series straight from summit!..but then again 4th gen Z28 maro's dont have true duals anyways
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Old 03-31-2012, 10:47 PM   #11
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Re: Single in dual out muffler?

Just make sure you take your car to a Mustang shop or simular. The shop has to be good at welding and something they do almost daily. That was exactly right- If he can't do it, it's because he can't do it. And don't think about places like Midas or something like that. They are like robots, they can not "create" or think outside of the box that mufflers are delivered in.
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Old 03-31-2012, 10:52 PM   #12
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Quote:
Originally Posted by robb15033
Just make sure you take your car to a Mustang shop or simular. The shop has to be good at welding and something they do almost daily. That was exactly right- If he can't do it, it's because he can't do it. And don't think about places like Midas or something like that. They are like robots, they can not "create" or think outside of the box that mufflers are delivered in.
+10000000
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Old 04-01-2012, 02:47 PM   #13
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Re: Single in dual out muffler?

they reason why most muffler shops wont or say the cant do a single in to dual out exhaust is because of the size of the muffler(s). If looked under your car you'll notice that the mufflers sit under the body of the car just before the rear tires. there is very little room else ware to place the muffler. in order for this to work you are going to need to use either Flowmaster hushpower or Magnaflow round muffer with a y pipe to work.





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Old 04-01-2012, 03:15 PM   #14
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Re: Single in dual out muffler?

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they reason why most muffler shops wont or say the cant do a single in to dual out exhaust is because of the size of the muffler(s). If looked under your car you'll notice that the mufflers sit under the body of the car just before the rear tires. there is very little room else ware to place the muffler. in order for this to work you are going to need to use either Flowmaster hushpower or Magnaflow round muffer with a y pipe to work.
I have a close friend who owns a muffler shop.
On numerous occasions I have helped him design and install systems that other shops in the area said were impossible.


I scratch built an entire dual exhaust system once for a 78 Mustang II with long tube headers, now that's a crowded undercarriage. All of the shops in the area said it was impossible, that there just wasn't enough room. To me that was a challenge so I went about proving them wrong. I did share my design and within a year or two there were numerous II's running around with my system design on them.


Mufflers come in a variety of sizes, so finding one that fits really shouldn't be an issue, or with a little extra effort you can build your own to fit. It all boils down to how bad you want something and how far you are willing to go to get what you want.
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Old 04-01-2012, 03:53 PM   #15
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Re: Single in dual out muffler?

I dont think it can not be done but those are the reason why some muffler shops wont do what he asked. i posted the pics of the under side of my V6 to help aid in his efforts. I also think the a Hushpower or small canister muffler like a Magnaflow with a Y-Pipe would work best. Like you you said it is the size of the muffler that gonna break or make this happen. he might want think about using a single chamber muffler as well. these are very small but he still might have issues with the drive shaft
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Old 04-01-2012, 04:22 PM   #16
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Re: Single in dual out muffler?

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I dont think it can not be done but those are the reason why some muffler shops wont do what he asked. i posted the pics of the under side of my V6 to help aid in his efforts. I also think the a Hushpower or small canister muffler like a Magnaflow with a Y-Pipe would work best. Like you you said it is the size of the muffler that gonna break or make this happen. he might want think about using a single chamber muffler as well. these are very small but he still might have issues with the drive shaft
+1 Agreed


It just irks me that some of them won't even try.
If it isn't a standard install they can't think outside the box.
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Old 04-01-2012, 05:00 PM   #17
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Re: Single in dual out muffler?

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+1 Agreed


It just irks me that some of them won't even try.
If it isn't a standard install they can't think outside the box.
yeap i hope he gets what he wants
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Old 04-01-2012, 07:32 PM   #18
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Re: Single in dual out muffler?

I was so pissed the first time I wanted to install a dual exhaust and the first two shops I went to said it couldn't be done and they made fun of the parts I chose. I did get it done the following day from a real fab shop and took my car by each of the first two shops with their managers and had them look and listen to the car. I asked repeatedly-"Sounds terrible, huh?" "It couldn't be done, huh"?? I honestly got no response from any of the 4-5 people. They looked at the car and then at me and turned their backs and walked away. I hate stupid *** lazy minded people. Especially the old ones who are supposed to have the most experience. Dumb *** people-
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Old 04-01-2012, 07:42 PM   #19
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Re: Single in dual out muffler?

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I was so pissed the first time I wanted to install a dual exhaust and the first two shops I went to said it couldn't be done and they made fun of the parts I chose. I did get it done the following day from a real fab shop and took my car by each of the first two shops with their managers and had them look and listen to the car. I asked repeatedly-"Sounds terrible, huh?" "It couldn't be done, huh"?? I honestly got no response from any of the 4-5 people. They looked at the car and then at me and turned their backs and walked away. I hate stupid *** lazy minded people. Especially the old ones who are supposed to have the most experience. Dumb *** people-
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Old 04-01-2012, 11:01 PM   #20
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Re: Single in dual out muffler?

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Old 04-02-2012, 07:29 AM   #21
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So my next question is there a big difference between a single exhause or the dual outlet muffler, performance or sound wise? Cause I'm still keeping my y pipe and all that, just the one or two tailpipes would be the difference, and I'm looking at a flow 40 series, herd they make the best sound on our sixers
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Old 04-02-2012, 02:26 PM   #22
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Re: Single in dual out muffler?

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So my next question is there a big difference between a single exhause or the dual outlet muffler, performance or sound wise? Cause I'm still keeping my y pipe and all that, just the one or two tailpipes would be the difference, and I'm looking at a flow 40 series, herd they make the best sound on our sixers
IMO the best performance and sound is from the full dual exhaust system with an H or X-pipe and long tube headers.


I don't think you will gain much performance or improved sound from the dual tail pipes alone.
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Old 04-02-2012, 03:33 PM   #23
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An h or x pipe isn't a have to for the sixer.
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Old 04-02-2012, 04:00 PM   #24
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Re: Single in dual out muffler?

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An h or x pipe isn't a have to for the sixer.
Why not?
Just because it has 2 less cylinders doesn't mean that it won't benefit just as much as an 8 cylinder.


Actually an H or X-pipe isn't a "have to" I suppose for any car.
They will run just fine without them, but they will run a bit better with them.
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Old 04-02-2012, 04:24 PM   #25
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The h or x pipe equalizes the back pressure on the exhaust. The 3.8L doesn't need it as much as the v8's. Plus the six is a even fire engine.
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Old 04-02-2012, 04:44 PM   #26
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Re: Single in dual out muffler?

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The h or x pipe equalizes the back pressure on the exhaust. The 3.8L doesn't need it as much as the v8's. Plus the six is a even fire engine.


From online research about H & X-Pipes;
Quote:
Though the H-pipe does not flow any significant amount of exhaust, it presence is nonetheless critical to efficient operation in dual-exhaust systems. These cross-overs perform a very important function in balancing exhaust flow and performance.


H-pipes should be installed in a dual-exhaust system as close to the exhaust headers (manifolds) as is physically possible.


Dual-exhaust systems without cross-over pipes can build up enough back pressure to inhibit flow and reduce horsepower.


H-pipes do not actually carry much exhaust gas. These cross-overs are designed to give pressure pulses inside the system a place to go to keep them from inhibiting flow.


A close relative of the H-pipe is the X-pipe, which gives the exhaust a place to cross over smoothly and helps to increase flow.


Crossover pipes modify sound waves in the same way as they do other pressure waves. H-pipes tend to have a louder and more muscular sound, and X-pipes tend to emphasize mid-range notes and make an engine sound more exotic.
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Old 04-02-2012, 05:57 PM   #27
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From online research about H & X-Pipes;
Hmm that's interesting. I learned something new.
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Old 04-02-2012, 06:12 PM   #28
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Re: Single in dual out muffler?

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Hmm that's interesting. I learned something new.
I hope you are not being sarcastic?
I learn something new everyday, whether it be from you guys on the forums here or by researching. I have had many of my old performance beliefs picked apart and proven to be wrong over the years. Kind of hard to swallow at times, but when the evidence is overwhelming you just chew on it a bit longer and swallow.
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Old 04-02-2012, 06:14 PM   #29
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I was being honest. That did teach me something. Didn't know that
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Old 04-02-2012, 06:29 PM   #30
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Re: Single in dual out muffler?

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I was being honest. That did teach me something. Didn't know that
Ok. I don't mean to be overly sensitive, but with text talking it's really hard to tell.
I never intend to sound or be that way myself, but several times my replies or statements have been taken wrong.


No offense, no foul.
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Old 04-02-2012, 06:32 PM   #31
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It's all good
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Old 04-02-2012, 09:36 PM   #32
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So I guess I should just drop the dual tip idea? Get a flow 40 n call it a day?
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Old 04-02-2012, 09:40 PM   #33
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Re: Single in dual out muffler?

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So I guess I should just drop the dual tip idea? Get a flow 40 n call it a day?
Probably just extra expense for little or no gain.
The choice is yours.
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Old 04-02-2012, 10:56 PM   #34
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Flow 40 or 44 can't decide D:
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Old 04-04-2012, 06:59 PM   #35
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Re: Single in dual out muffler?

The day after you put on your muffler, you will want a true blue dual exhaust system. Its guaranteed and it never goes away.
Some pics from under my car. Small items like the high flow cats, ProChamber, Flowmaster 10's, ect...
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