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Old 05-27-2015, 11:19 PM   #1
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2002 Mustang GT exhaust

I have a 2002 mustang gt with a flowmaster American thunder catback exhaust. I love it but it's just to quiet for me. I love the sound of straight pipes but I've heard of people just take off their muffler and leave the cats on and it sounds amazing. If I took off my mufflers what kind of power would I be loseing or gaining? Is this bad for the engine?
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Old 05-27-2015, 11:29 PM   #2
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2002 Mustang GT exhaust

I had exhaust cutouts on my Impala, and with them open it was extremely deep loud sound. I loved them, nice deep sound. There was a noticeable difference in the car's power when open and closed. Open loss power, closed felt stronger. Same driving habits. I experimented with it, and that was the conclusion. And about a year ago I took them off.
Basically, there's a chance it might feel sluggish. Another issue you might face is you might get tired of it.


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Old 05-27-2015, 11:37 PM   #3
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Thankyou for the info. I was hopeing to keep the power but maby I'll save up for a new midpipe to make her louder.
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Old 05-27-2015, 11:39 PM   #4
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An off road mid pipe should be the perfect thing for your situation. I would go h since you have chambered mufflers.

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Old 05-27-2015, 11:43 PM   #5
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Thankyou for the info. I was thinking like a JBA off-road h pipe. Paired with my mufflers would sound good.
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Old 05-27-2015, 11:49 PM   #6
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That should sound great for sure.

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Old 05-27-2015, 11:55 PM   #7
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Thankyou so much for your help

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Old 05-28-2015, 12:15 AM   #8
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O/r h . People will hate because it's different but it still sounds beast and unique


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Old 05-28-2015, 12:27 AM   #9
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O/r h . People will hate because it's different but it still sounds beast and unique


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Yeah I love the sound of that paired together. I don't like the X pipes very much. That's what is popular now

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Old 05-28-2015, 12:43 AM   #10
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Yeah I love the sound of that paired together. I don't like the X pipes very much. That's what is popular now

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Yea 90% have x pipes.


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Old 05-28-2015, 12:44 AM   #11
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Yea 90% have x pipes.


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Gotta be a little different that everyone else

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Old 05-28-2015, 05:23 AM   #12
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Not sure if your considering a new mid pipe and catback. But I have slp loudmouths 2, with a upr off-road x pipe. It's very very loud but I love it. Haven't been pulled over yet eathir, just gotta pick your spots when you really wanna step on it.
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Old 05-28-2015, 07:20 AM   #13
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2002 Mustang GT exhaust

H- old school muscle sound
X- raspy nascar sound
To me an H is always better than an X, in terms of sound, except on this car...
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Old 05-28-2015, 08:26 AM   #14
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Want loud? Get x pipe with lm1.

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Old 05-28-2015, 09:27 AM   #15
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Not sure if your considering a new mid pipe and catback. But I have slp loudmouths 2, with a upr off-road x pipe. It's very very loud but I love it. Haven't been pulled over yet eathir, just gotta pick your spots when you really wanna step on it.
Yeah I wish I had that setup. I just don't have the money to buy a hole new cat back exhaust right now. I just wana get away from my quiet Flowmaster super 40's. I'll probably end up saving my money for a better one.

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Old 05-28-2015, 09:52 AM   #16
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I have a 2002 mustang gt with a flowmaster American thunder catback exhaust. I love it but it's just to quiet for me. I love the sound of straight pipes but I've heard of people just take off their muffler and leave the cats on and it sounds amazing. If I took off my mufflers what kind of power would I be loseing or gaining? Is this bad for the engine?
Felt like I gained a few hp when I deleted my mufflers (retained cats for smog). I love the sound and will probably never run mufflers

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Old 05-28-2015, 10:10 AM   #17
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Felt like I gained a few hp when I deleted my mufflers (retained cats for smog). I love the sound and will probably never run mufflers

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Is it ever too loud? Do you get annoyed?

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Old 05-28-2015, 12:21 PM   #18
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Originally Posted by Noah7373 View Post
Yeah I wish I had that setup. I just don't have the money to buy a hole new cat back exhaust right now. I just wana get away from my quiet Flowmaster super 40's. I'll probably end up saving my money for a better one.

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Noah, I have the same car you do, but with the cats. I love it!!! Sounds great. It's perfect because I am in "the city" (Chicago) a lot and it's not quite enough sound to get me pulled over. My boyfriend has a '15 Boxter that I drive a lot in sport mode, which has the low rumbling sound of awesomeness I crave, but my car occasionally gets that beautiful bubbling gurgling when revmatch downshifting to 2nd that I love so much. I'd rather drive with my windows open than listen to the radio because the sound is so perfectly satisfying. Save your money and get them. You will love the acoustics.
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Old 05-28-2015, 12:48 PM   #19
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Noah, I have the same car you do, but with the cats. I love it!!! Sounds great. It's perfect because I am in "the city" (Chicago) a lot and it's not quite enough sound to get me pulled over. My boyfriend has a '15 Boxter that I drive a lot in sport mode, which has the low rumbling sound of awesomeness I crave, but my car occasionally gets that beautiful bubbling gurgling when revmatch downshifting to 2nd that I love so much. I'd rather drive with my windows open than listen to the radio because the sound is so perfectly satisfying. Save your money and get them. You will love the acoustics.

I will definitely save up for them. Yes I love driving with the windows down to rather than listening to music. If my car is warm enough I get the same bubbling when I rev match at 2nd. I just want it to be louder. That's for the info!


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Old 05-28-2015, 01:01 PM   #20
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Take off the FM 44's and replace them with the FM 10 Series mufflers.
Go to youtube and give them a listen. I am positive you will be very proud of the sound and it is minimally intrusive and cheap.
No mufflers sound odd, most likely will not like the torque loss either.
Should sound like this:
https://youtu.be/ZrFFaLTz4Tc
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Old 05-28-2015, 01:06 PM   #21
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Take off the FM 44's and replace them with the FM 10 Series mufflers.
Go to youtube and give them a listen. I am positive you will be very proud of the sound and it is minimally intrusive and cheap.
No mufflers sound odd, most likely will not like the torque loss either.
Should sound like this:
https://youtu.be/ZrFFaLTz4Tc
Those sound really nice too. And that's pretty cheap! Thankyou

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Old 05-28-2015, 01:25 PM   #22
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Originally Posted by robb15033 View Post
Take off the FM 44's and replace them with the FM 10 Series mufflers.
Go to youtube and give them a listen. I am positive you will be very proud of the sound and it is minimally intrusive and cheap.
No mufflers sound odd, most likely will not like the torque loss either.
Should sound like this:
https://youtu.be/ZrFFaLTz4Tc
Sounds GREAT!!!!!!!!!!!!
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Old 05-28-2015, 01:29 PM   #23
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dont run without mufflers IMO. i felt a loss of torque when i did. when u had my 02 gt i had off road x with slp lm1's . I LOVEED IT. if u like old school with some beafy sound get a flowmaster 10 with the off road H mid pipe


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Old 05-28-2015, 01:31 PM   #24
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dont run without mufflers IMO. i felt a loss of torque when i did. when u had my 02 gt i had off road x with slp lm1's . I LOVEED IT. if u like old school with some beafy sound get a flowmaster 10 with the off road H mid pipe


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I think I'm guna save up for the X pipe with the slp's now. I'm starting to lean towards how BA they sound. Thankyou!

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Old 05-28-2015, 01:38 PM   #25
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very good choice my friend. u will NOT be disappointed. the way i did it was i just bought some slp1 mufflers from a forum member instead of buying the whole catback. and just had the shop weld them in. saves money


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Old 05-28-2015, 01:41 PM   #26
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very good choice my friend. u will NOT be disappointed. the way i did it was i just bought some slp1 mufflers from a forum member instead of buying the whole catback. and just had the shop weld them in. saves money


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That's a good idea. I know how to weld them myself and save even more. I didn't think of that! Thanks again!!

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Old 05-28-2015, 01:43 PM   #27
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Super 10s ftw
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Old 05-28-2015, 01:48 PM   #28
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That's a good idea. I know how to weld them myself and save even more. I didn't think of that! Thanks again!!

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even better man , no problem


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Old 05-28-2015, 03:43 PM   #29
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I think I'm guna save up for the X pipe with the slp's now. I'm starting to lean towards how BA they sound. Thankyou!

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Just my opinion,i Haven't heard slp 1 in person Only video but judging by YouTube lm2 wins for me between them. Might be because I have lm2 on my car but I'm very happy with my choice.
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Old 05-28-2015, 03:50 PM   #30
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If you are looking for loud check FRPP M55s, they are at least twice as loud as SLP LM1, which is louder than LM2. And the interesting fact is its a chambered muffler.


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Old 05-28-2015, 04:02 PM   #31
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Is it ever too loud? Do you get annoyed?

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Only around cars with sensitive alarms, and no, never will get annoyed. No torque loss with cats still on, it's time to make new video with a good Mic. There are a select few of us (chevys included), that are straight-pipe-freaks haha.

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Old 05-30-2015, 05:42 PM   #32
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Why not just get off road H pipe with flowmaster super 10? I have them, one of the loudest cars in Charleston, SC. And they're pretty cheap, $60.00 a piece from auto anything. And as far as gas mileage goes no problem. But with any Mustang a lead foot leads to no gas sometimes lol. I have an auto 99gt with 87 performance custome tune and sometimes I go crazy on gas pedal and still get like 15-16 mpg on lead future. But I have other mods also. But flowmaster super 10. No if or buts about it. Another sceneries is I know someone with my same setup minus different mufflers I think one of loud mouths. And he have long tube headers, which I don't and my car is way lower than his and he has a stick also... SMH

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Old 05-30-2015, 05:49 PM   #33
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Does nobody else feel like making their relatively slow car as loud as possible is kind of lame? My 3v is full bolt one almost and I still feel like it can't quite back up the bark
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Old 05-30-2015, 07:04 PM   #34
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Does nobody else feel like making their relatively slow car as loud as possible is kind of lame? My 3v is full bolt one almost and I still feel like it can't quite back up the bark
VERY

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Old 05-30-2015, 07:47 PM   #35
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VERY

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I Definetly felt that way with a stock 3v with outlaws. Oh well I guess lots of riced out Hondas around here anyways
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