How can I make my exhaust quieter?

ATTFighter said:

I daily my mustang now and it's just to loud for daily use. Here is my setup...

Stainless works catless long tube headers and mbrp street catback. Short of just removing the mbrp and throwing the stock catback on I was thinking I could have some resonators welded in?

Which resonators would work and which part of the mbrp should I have them welded into?

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1. Put some cats on (it will reduce the sound and will be better overall)
2. If you need more sound reduction, install your factory resonator and mufflers. I have catted LTHs connected to the factory resonator and mufflers, only starts getting loud above 3k RPM. Even at 6k RPM, it is louder but not excessive.

Performance nut said:

1. Put some cats on (it will reduce the sound and will be better overall)
2. If you need more sound reduction, install your factory resonator and mufflers. I have catted LTHs connected to the factory resonator and mufflers, only starts getting loud above 3k RPM. Even at 6k RPM, it is louder but not excessive.

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ATTFighter said:

Well I want to do it without messing with the headers or cats. I want to keep the same power just make it quieter. I also want to keep the mbrp tips because they are big. I'm thinking I can weld in resonators but i don't have the stock catback anymore so I would need to buy aftermarket ones.

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Performance nut said:

Higher performance comes with a price almost always. Rare do you every get "free" power. In your case, sound is your price.

I'm sure if you ask around, there are plenty of guys going to an aftermarket exhaust who would off load their stock catback. That is cheap and inexpensive and will take fewer mods I would think to make work.

Basically, you need to put something between your engine and your exhaust tips. If it isn't going to be cats, it has to be something else. As far as losing power, I'd like to see where catless makes significant power over catted exhausts. I'm thinking that it is a small difference for the performance cats.

Yeah, it is a loss but you gain sound reduction. Considering what mods you are talking about, I'm thinking your issues likely stems from a legal problem, ie noise ordanance?

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ATTFighter said:

Nope, no legal issues just tired if how loud it is for daily use but don't want to lose power. I don't want to add cats to my long tubes I'm already tuned for my catless ones which is why I want to tackle the issue at the catback part of the exhaust. I guess I could throw up the stock catback but I just read that some people were welding in resonators to quiet it down a bit and was curious as to which resonators people were using.

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Terminator2 said:

18" long case dynomax race bullets mounted right after your X or H will cut the volume a ton but zero performance loss.

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ATTFighter said:

Nope, no legal issues just tired if how loud it is for daily use but don't want to lose power. I don't want to add cats to my long tubes I'm already tuned for my catless ones which is why I want to tackle the issue at the catback part of the exhaust. I guess I could throw up the stock catback but I just read that some people were welding in resonators to quiet it down a bit and was curious as to which resonators people were using.

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Qwkfords said:

What solution did you end up doing? I am looking to quiet mine down too. Stainless works LT headers with 3” Stainless Works Legend H pipe and exhaust.

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ATTFighter said:

Nope, no legal issues just tired if how loud it is for daily use but don't want to lose power.

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shogun32 said:

Edit, holy Necro-Thread, Batman!! come on, @Qwkfords

You didn't gain any measurable power in the first place...

earplugs.
https://www.amazon.com/Classic-Uncorded-Earplugs-Value-390-1000/dp/B0006GWRY0
200 pair should last you a while.

What diameter are your mid-length pipes? You can buy Borla resonators in 2.5 and 3.

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