2003 GT is too darn quiet! - Forums at Modded Mustangs
 
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post #1 of 10 Old July 5th, 2015, 04:59 PM Thread Starter
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2003 GT is too darn quiet!

I have a 2003 GT and I purchased the American Thunder system from AM last year. It's too damn quiet for my liking. Anyway, I'm not sure if I should just purchase a different catback exhaust system, or try adding an aftermarket H/X pipe? I hate the idea of spending another $500+ on a new catback system, but I'm just not sure if an aftermarket X/H pipe will be loud enough? Also, I'm curious if a catted X/H (id rather keep the cats) would be much louder than the factory pipe?
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post #2 of 10 Old July 5th, 2015, 05:01 PM
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Catted H pipe will make a huge difference. It always sounds mild with cats.


What does your dyno sheet trap?
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post #3 of 10 Old July 5th, 2015, 05:33 PM
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You can always have a different muffler welded in. Pypes m80's and a off road x pipe scream almost an exotic sound. Barely any drone at all either.

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post #4 of 10 Old July 5th, 2015, 06:04 PM Thread Starter
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I thought about having the Loudmouth resonators welded in, but it looks like they wouldn't really fit with the left over Flowmaster piping.
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post #5 of 10 Old July 5th, 2015, 06:37 PM
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Quote:
Originally Posted by ChaudMasterFlex View Post
I thought about having the Loudmouth resonators welded in, but it looks like they wouldn't really fit with the left over Flowmaster piping.
I don't see why a decent exhaust shop couldn't weld them in.
I had my flowmasters removed and m80's welded in.
Think mine is the stock cat back piping but that shouldn't matter.

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Mods: BBK CAI, Typhoon Intake Manifold, PP throttle body/Plenum, Underdrive pulleys, Weight reduction, 3.73, J&M UCA, MM LCA, MGW shifter, Pypes M80, UPR O/R X Pipe, BBK spring isloators, MM pinion snuubber,AC delete
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post #6 of 10 Old July 5th, 2015, 06:42 PM
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Put an o/r h pipe on there, itll wake it up.

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post #7 of 10 Old July 5th, 2015, 09:18 PM
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A good mid-pipe should suit your needs just fine.



Just a bolt on 2V <3
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post #8 of 10 Old July 6th, 2015, 06:26 AM
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Mid pipe will change everything for the better


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post #9 of 10 Old July 6th, 2015, 06:36 AM
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Quote:
Originally Posted by ShiftinGT View Post
You can always have a different muffler welded in. Pypes m80's and a off road x pipe scream almost an exotic sound. Barely any drone at all either.
I second this. had a shop weld in pypes m80s and tailpipes all the way back along with some high flow cats on my offroad x. It is stupid loud even with cats and my girlfriend heard me cruise by her work a quarter mile away the other day hehe people compliment it almost daily, it turns heads for sure
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post #10 of 10 Old July 6th, 2015, 07:44 AM
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An offroad prochamber would sound very good with that catback.


I have this setup and can vouch for how good it sounds. Its not ear-splitting, but its night and day from the stock midpipe
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