2004 exhaust question
11-07-2017, 01:06 AM
#1
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2004 exhaust question So it's my understanding that the stock 04 catback has one chambered muffler and one straight through muffler. My car has kooks headers with no cats, a baby cam and an 04 style Borla catback. I'm biased since it's my car, but I think it sounds great as is but it's just a little quieter than I'd like. It really screams above 4k but it's surprisingly mellow at lower RPMs. It's a 2.25" catback as opposed to the majority of others that are 2.5". I'm curious if I could replace one of the mufflers with a straight pipe or a different (louder) muffler while keeping the other Borla muffler. I know that's obviously possible, but I want to know if that will actually sound good or if it'll sound worse albeit louder. I'd hate to hack up an expensive catback and have it sound bad. I bought it with the Borla catback already on it otherwise I may have kept the stock catback or bought a louder catback to begin with.
11-08-2017, 08:46 PM
#2
So it's my understanding that the stock 04 catback has one chambered muffler and one straight through muffler. My car has kooks headers with no cats, a baby cam and an 04 style Borla catback. I'm biased since it's my car, but I think it sounds great as is but it's just a little quieter than I'd like. It really screams above 4k but it's surprisingly mellow at lower RPMs. It's a 2.25" catback as opposed to the majority of others that are 2.5". I'm curious if I could replace one of the mufflers with a straight pipe or a different (louder) muffler while keeping the other Borla muffler. I know that's obviously possible, but I want to know if that will actually sound good or if it'll sound worse albeit louder. I'd hate to hack up an expensive catback and have it sound bad. I bought it with the Borla catback already on it otherwise I may have kept the stock catback or bought a louder catback to begin with.
11-09-2017, 09:18 AM
#3
your best bet is to find an original 04 catback, or at least the mufflers.
11-10-2017, 08:33 AM
#4
TECH Enthusiast
Correct separate types to mimic the sound of the 1964 GTO.
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04-11-2018, 01:26 PM
#14
No get longtubes and catless midpipe with stock 04 catback. It is far from LOUD, but it's a nice tone and volume level.
My old car:
With Stainless Works mufflers:
Custom 3.5" with a single magnapack:
My old car:
With Stainless Works mufflers:
Custom 3.5" with a single magnapack:
04-20-2018, 02:30 PM
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So it's my understanding that the stock 04 catback has one chambered muffler and one straight through muffler. My car has kooks headers with no cats, a baby cam and an 04 style Borla catback. I'm biased since it's my car, but I think it sounds great as is but it's just a little quieter than I'd like. It really screams above 4k but it's surprisingly mellow at lower RPMs. It's a 2.25" catback as opposed to the majority of others that are 2.5". I'm curious if I could replace one of the mufflers with a straight pipe or a different (louder) muffler while keeping the other Borla muffler. I know that's obviously possible, but I want to know if that will actually sound good or if it'll sound worse albeit louder. I'd hate to hack up an expensive catback and have it sound bad. I bought it with the Borla catback already on it otherwise I may have kept the stock catback or bought a louder catback to begin with.
I have the exact same exhaust, Borla Cat back. in 2007 I did my first engine upgrade. 122 Maggie, blah, blah. THAT woke the exhaust up. It screamed.
If you want the car to sound like a muscle car, either get some high flow cats or get rid of them completely. The difference is WOW.
Last edited by Chad Dixon; 04-20-2018 at 02:42 PM.