GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Flowmaster American Thunder Kit?

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Old Apr 12, 2005 | 05:04 PM
  #1  
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Want the exhaust to be louder than stock. Had a 98 GT with 40 series flows and UPR X-Pipe and it was very loud!! Want it to be quiter than off road x but still have deep rumble and loader than stock.

What axel-back do you guys have and recommend?

Thanks.
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Old Apr 12, 2005 | 05:37 PM
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Originally posted by stangscuba98a@April 12, 2005, 4:07 PM
Want the exhaust to be louder than stock. Had a 98 GT with 40 series flows and UPR X-Pipe and it was very loud!! Want it to be quiter than off road x but still have deep rumble and loader than stock.

What axel-back do you guys have and recommend?

Thanks.
Dynamax, or magnaflow.

I would shy away from flowmaster unless you dont care about bottlenecking your exhaust with all the baffles they use.

basically anything you can see through will do what you are trying to do.
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Old Apr 12, 2005 | 06:30 PM
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Originally posted by Faber@April 12, 2005, 7:40 PM
basically anything you can see through will do what you are trying to do.
The Cherry BOMB!
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Old Apr 12, 2005 | 06:35 PM
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get the SLP Loudmouths..... best. sound. ever.
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Old Apr 12, 2005 | 06:58 PM
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Originally posted by emperorjordan@April 12, 2005, 6:38 PM
get the SLP Loudmouths..... best. sound. ever.

Aren't those just basically no mufflers? Would that void warranty having no mufflers like that?
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Old Apr 13, 2005 | 10:07 AM
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Originally posted by stangscuba98a+April 12, 2005, 7:01 PM--><div class='quotetop'>QUOTE(stangscuba98a @ April 12, 2005, 7:01 PM)</div><div class='quotemain'><!--QuoteBegin-emperorjordan@April 12, 2005, 6:38 PM
get the SLP Loudmouths..... best. sound. ever.

Aren't those just basically no mufflers? Would that void warranty having no mufflers like that?
[/b][/quote]

Yes, there are no mufflers. But there are resonator exhaust tips that baffle some of the noise coming out. I have to agree that they produce the best sound I've ever heard from a mustang. At idle it has a nice... "glub glub" sound.

I took mine into the dealership for a checkup and they didn't say anything to me about it. I don't believe this mod is drastic enough to void a warranty.
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Old Apr 13, 2005 | 10:44 AM
  #7  
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Originally posted by tech+April 13, 2005, 9:10 AM--><div class='quotetop'>QUOTE(tech @ April 13, 2005, 9:10 AM)</div><div class='quotemain'>
Originally posted by stangscuba98a@April 12, 2005, 7:01 PM
<!--QuoteBegin-emperorjordan
@April 12, 2005, 6:38 PM
get the SLP Loudmouths..... best. sound. ever.



Aren't those just basically no mufflers? Would that void warranty having no mufflers like that?
Yes, there are no mufflers. But there are resonator exhaust tips that baffle some of the noise coming out. I have to agree that they produce the best sound I've ever heard from a mustang. At idle it has a nice... "glub glub" sound.

I took mine into the dealership for a checkup and they didn't say anything to me about it. I don't believe this mod is drastic enough to void a warranty.
[/b][/quote]


well, I asked my dealer on two different visits.... and they said as long as it is after the cats, they will still honor the warrenty.
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Old Apr 13, 2005 | 10:55 AM
  #8  
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Originally posted by emperorjordan+April 13, 2005, 10:47 AM--><div class='quotetop'>QUOTE(emperorjordan @ April 13, 2005, 10:47 AM)</div><div class='quotemain'>
Originally posted by tech@April 13, 2005, 9:10 AM
Originally posted by stangscuba98a@April 12, 2005, 7:01 PM
<!--QuoteBegin-emperorjordan
@April 12, 2005, 6:38 PM
get the SLP Loudmouths..... best. sound. ever.



Aren't those just basically no mufflers? Would that void warranty having no mufflers like that?


Yes, there are no mufflers. But there are resonator exhaust tips that baffle some of the noise coming out. I have to agree that they produce the best sound I've ever heard from a mustang. At idle it has a nice... "glub glub" sound.

I took mine into the dealership for a checkup and they didn't say anything to me about it. I don't believe this mod is drastic enough to void a warranty.

well, I asked my dealer on two different visits.... and they said as long as it is after the cats, they will still honor the warrenty.
[/b][/quote]

Headers void warranty?! durn
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Old Apr 13, 2005 | 10:57 AM
  #9  
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Originally posted by tech+April 13, 2005, 9:58 AM--><div class='quotetop'>QUOTE(tech @ April 13, 2005, 9:58 AM)</div><div class='quotemain'>
Originally posted by emperorjordan@April 13, 2005, 10:47 AM
Originally posted by tech@April 13, 2005, 9:10 AM
Originally posted by stangscuba98a@April 12, 2005, 7:01 PM
<!--QuoteBegin-emperorjordan
@April 12, 2005, 6:38 PM
get the SLP Loudmouths..... best. sound. ever.



Aren't those just basically no mufflers? Would that void warranty having no mufflers like that?


Yes, there are no mufflers. But there are resonator exhaust tips that baffle some of the noise coming out. I have to agree that they produce the best sound I've ever heard from a mustang. At idle it has a nice... "glub glub" sound.

I took mine into the dealership for a checkup and they didn't say anything to me about it. I don't believe this mod is drastic enough to void a warranty.



well, I asked my dealer on two different visits.... and they said as long as it is after the cats, they will still honor the warrenty.
Headers void warranty?! durn
[/b][/quote]

I dont know..... I didnt ask about headers.....
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