Muffler Shops telling the Truth? - Ford Mustang Forum
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post #1 of 16 (permalink) Old 06-03-2006 Thread Starter
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Muffler Shops telling the Truth?

Hey Guys and Gals, i am about to get two original 40's flowmasters tomorrow and have been calling around for install prices ($200 best price so far) why is it that many muffler shops that I call tell me that putting dual flowmasters from the cats back on my 95 V6 is a waste of money because it will not sound any different with two than one? Anyone have any insight why?


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post #2 of 16 (permalink) Old 06-03-2006
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Quote:
Originally Posted by MustangV6Man
Hey Guys and Gals, i am about to get two original 40's flowmasters tomorrow and have been calling around for install prices ($200 best price so far) why is it that many muffler shops that I call tell me that putting dual flowmasters from the cats back on my 95 V6 is a waste of money because it will not sound any different with two than one? Anyone have any insight why?
never heard that one . ..


Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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post #3 of 16 (permalink) Old 06-03-2006
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It would be an appearance-only upgrade, your bottleneck isn't behind the cats.
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post #4 of 16 (permalink) Old 06-03-2006
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After the two cats, it goes into a single pipe, it does make a difference in Tone, and performance. $200 is a good quote becuase they are going to have to bend a second pipe for the passenger side, unless you allready have dual exhaust then for a muffler install...2 40 series flowmasters usually run like $79 each so $79 X 2 = 158, and if the install goes well your looking at $42 for install and pipes.

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post #5 of 16 (permalink) Old 06-03-2006 Thread Starter
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The muffler shops I spoke with sad they would cut the y pipe and have each side with their own pipe ( I guess this is True Dual?) right after the cats. I am not going to the ones that told me "It will sound like a bumblebee" or "the won't sound any different than if you had one muff" and many ofthem say that. You would think you could trust their advice since they are the muffler people, but when I heard that I choose to believe the many many many mustang owners who say they will sound good. I would bring my own Flow 40's and they will use their pipe and install would be $200 plus what ever the tips cost. What would you guys recommend for tips?

oh yea, I am getting my flows for a very very good price, brand new from a friend for $75 for both which is a total of $275 for install and muffs.

2006 Mustang GT Coupe Automatic
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post #6 of 16 (permalink) Old 06-04-2006
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Quote:
Originally Posted by Zenmervolt
It would be an appearance-only upgrade, your bottleneck isn't behind the cats.
depends on the car. the 99-04s have a bit of restriction at the y- but go too big and you lose hp. you can pick up a good amount switching to 2" duals -but 2.5"ers lose you a ton of hp/tq.


Unless you're running a power adder.

anything older than that, and it's appearance only. -again unless you've got something else going under the hood. .. .

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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post #7 of 16 (permalink) Old 06-04-2006
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alot of muffler shops dont like to mess with duals on a mustang , they think its too much work .. some mufflerman shops wont even touch mustangs unless u neeed a replacement exhuast or just some tips... why i dono i guess they just dont like buisness

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post #8 of 16 (permalink) Old 06-05-2006 Thread Starter
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Quote:
Originally Posted by kscoyote
depends on the car. the 99-04s have a bit of restriction at the y- but go too big and you lose hp. you can pick up a good amount switching to 2" duals -but 2.5"ers lose you a ton of hp/tq.


Unless you're running a power adder.

anything older than that, and it's appearance only. -again unless you've got something else going under the hood. .. .
So you are saying that putting the duals flows on my V6 would not sound differnt and not any hp/torque and would be an appearance mod only?

2006 Mustang GT Coupe Automatic
Mods:
C&L Street Intake, 93 Octane Tune (Brenspeed & BamaTunes), Pypes Longtube Headers, Pypes O/R H-Pipe, Flowmaster Axelbacks, FRPP 4.10's, 20x8.5 inch Godspeed Omega Deep Dish Wheels
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post #9 of 16 (permalink) Old 06-05-2006
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Quote:
Originally Posted by MustangV6Man
So you are saying that putting the duals flows on my V6 would not sound differnt and not any hp/torque and would be an appearance mod only?
Oh, the right sizing would get you maybe 5-7 hp, depending on whether or not you have a CAI, and the larger the tip the deeper the sound.

But that's a lot of money for 5-7 hp. underdrivers would be more cost effective. For that matter you could probably do a port and polish job on either the intake manifold or the heads -which would give you a LOT better bang for the buck. .

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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what kind of places do a port and polish? this is probly a dumb question but ive heard a lot about that stuff but not exactly what it does...anyone wanna help me out (sry..i still dont know much)
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post #11 of 16 (permalink) Old 06-06-2006 Thread Starter
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I got my Dual 2.25 In/Out FLowmaster's 40's done yesterday and they sound great:green . I am so happy with my decision. All for 200 install and 75 for both flow's new = $275 total. Oh and the tips were $40 a piece for Stainless Steel rolled tips.

Kscoyote I am not sure running undriver pulleys would be ideal because I am running three 12' Subs along with two amps (In a convertible ) in my trunk. Or will they de ideal? Many people on these forums refer to their "Screaming GT" then I will call mine a "Yelling V6" because it is not as aggressive sounding as a GT.

2006 Mustang GT Coupe Automatic
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C&L Street Intake, 93 Octane Tune (Brenspeed & BamaTunes), Pypes Longtube Headers, Pypes O/R H-Pipe, Flowmaster Axelbacks, FRPP 4.10's, 20x8.5 inch Godspeed Omega Deep Dish Wheels
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na it aint worth it. ur only going to be spending money on very little improvement.
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Quote:
Originally Posted by MustangV6Man
I got my Dual 2.25 In/Out FLowmaster's 40's done yesterday and they sound great:green . I am so happy with my decision. All for 200 install and 75 for both flow's new = $275 total. Oh and the tips were $40 a piece for Stainless Steel rolled tips.

Kscoyote I am not sure running undriver pulleys would be ideal because I am running three 12' Subs along with two amps (In a convertible ) in my trunk. Or will they de ideal? Many people on these forums refer to their "Screaming GT" then I will call mine a "Yelling V6" because it is not as aggressive sounding as a GT.
Forgot about the sound re: mufflers and pipes. Yeah, it'll sound quite a bit different, depending on the muffler and the resonator tip. If you use an OEM style muffler and turned down tips, then it won't sound much different.

************************************************** *****

If you've got a sound system, you'll need an alternator OVERdrive pulley from ASP.

The NET hp will STILL be substantial.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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Quote:
Originally Posted by Red99Stang
what kind of places do a port and polish? this is probly a dumb question but ive heard a lot about that stuff but not exactly what it does...anyone wanna help me out (sry..i still dont know much)
Any machine shop can do it, not necessarily correctly.

The heads are set up like a Cleveland engine, and there aren't many shops that know how to do those anymore. They can take too much material, and you'll have dead spots in the flow.

THe v-6 specialists are www.supersixmotorsports.com www.rpm-mustangs.com and www.moranav6racing.com

I'd go with them, unless there's a machine shop in your area that's done a lot of work with 3.8L cars.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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Hay, I hadn't never heard of that about losing a few horsepower and torque if you go to big.

I had a Camaro that I put the Flowmaster 40 series muffler on that gave me the same setup that the Z28 and SS had a quasi-dual exhaust. Meineke put them on for me welded everything up just perfect and I didn't have a problem with them except the tips I had chose where polish not stainless and eventually started to rust. I had to go back and get some stainless steel ones for the camaro.

I can say that it doesn't make the car sound like a bee or sound ricy. I didn't have any resonators on my camaro and it sounded really close to a somewhat stock Z28... So much so that after I started driving around town and just enjoying my exhaust setup on the camaro, people would stop me and as if that was a Z28 or they hear me come up in a gas station and ask the same question. So I can say that flowmaster mufflers will give you a good sound, unlike the magnaflow they produce an excellent throaty sound, magnaflow mufflers sound a little crappy (no offense Mario Andretti people out there). For those GT owners here that say that the V6 will never sound like a GT they are wrong to a degree.

The only time they are right is when you rev to high rpms, no matter what you do to the exhaust at high rpms (4200+) you get a really cool racy like sound, have you ever heard a V10 8.0 Liter Viper GTS rev, its so cool. At low rpms it as deep as a V8 but with it own distintive sound, at high rpms it sounds like a race car (to a degree). Same can be said about the Mustang V6 and Camaro V6. A GT or any V8 for that matter be it from Ford or Mercedes Benz SL500, as it revs higher it gets deeper and more throaty. A V6 or V10 or even V12 will get racier and racier.

Hope that helped some...

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