Recommend me a quiet muffler
#1
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Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
Recommend me a quiet muffler
Quiet you say? I know, most people want something louder, but I've got a 3.4, and 'loud' just doesn't go well with it.
Currently my Dynomax 2.5 single in, dual out muffler is getting louder, and my fuel economy is getting worse. It used to sound ok with the 2.8, stock manifolds, and 2.5 cat back, but since I put in the 3.4 with headers several years ago, it's always been a bit too loud.
(Is the sole cause of my increasingly bad mileage due to the muffler going bad? I don't know, as there's a ton of other things i still need to check)
I'm thinking about getting another 2.5 muffler (just to match up with the 2.5 I-pipe, and putting 2.25 outlets on it (it is a dual outlet afterall).
I don't know anymore what series my current muffler is. I put it on back in 02.
I'm also thinking about putting the stock exhaust manifolds back on. My mileage used to be great with the old 2.8, but never has been quite the same with the headers and 3.4, and there's only one way to see for sure.
Most of my driving hovers around 1500 to 2000 rpm, and I've always been wondering if my current exhaust's tuned rpm range is far from that.
Currently my Dynomax 2.5 single in, dual out muffler is getting louder, and my fuel economy is getting worse. It used to sound ok with the 2.8, stock manifolds, and 2.5 cat back, but since I put in the 3.4 with headers several years ago, it's always been a bit too loud.
(Is the sole cause of my increasingly bad mileage due to the muffler going bad? I don't know, as there's a ton of other things i still need to check)
I'm thinking about getting another 2.5 muffler (just to match up with the 2.5 I-pipe, and putting 2.25 outlets on it (it is a dual outlet afterall).
I don't know anymore what series my current muffler is. I put it on back in 02.
I'm also thinking about putting the stock exhaust manifolds back on. My mileage used to be great with the old 2.8, but never has been quite the same with the headers and 3.4, and there's only one way to see for sure.
Most of my driving hovers around 1500 to 2000 rpm, and I've always been wondering if my current exhaust's tuned rpm range is far from that.
#2
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Re: Recommend me a quiet muffler
Have you considered adding a resonator inline with your muffler. Last V6 exhaust I built had 2 resonators and a borla straight through muffler and it sounds great when I step on it and it is very quiet when I am cruising.
My experience with dynomax is their mufflers tend to get louder over time and usually rather quickly.
My experience with dynomax is their mufflers tend to get louder over time and usually rather quickly.
#3
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Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
Re: Recommend me a quiet muffler
Somebody did mention adding a glasspack into the system. I'd have to look closely at the diameter of them and how much ground clearance I'd lose under the middle of the car, as that's the only straight stretch of pipe there is that I can think of. I'll check out resonators and see where I could fit one.
Current muffler has probably 80 - 100k miles on it.
Current muffler has probably 80 - 100k miles on it.
#4
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Re: Recommend me a quiet muffler
Most of them are about 3.5inch in diameter and can be had for about 20 bucks for a cheap one. I would go for the perforated one over a louvered because they reduce flow less
Here is the last exhaust I made with 2 silverline resonators
Here is the last exhaust I made with 2 silverline resonators
#5
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Car: 1990 Formula Firebird
Engine: 350 (5.7) TPI
Transmission: WC T5
Axle/Gears: 3.42 POSI
Re: Recommend me a quiet muffler
Let's see these headers... I've always installed headers and smiled at my 2-3 mpg increase.
#6
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Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
Re: Recommend me a quiet muffler
These are made by Pacesetter.
#7
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Car: '83 z/28
Engine: 305
Transmission: T5
Axle/Gears: Stock?
Re: Recommend me a quiet muffler
Your muffler "going bad" is just breaking in. And that would not decrease MPG. 9 out of 10 times its the driver hitting the gas pedal, haha.
But I agree. If you wan't to take some of the high pitch raspy sound out, add a resonator (glasspack) and that will take some sound away.
But I agree. If you wan't to take some of the high pitch raspy sound out, add a resonator (glasspack) and that will take some sound away.
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#8
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Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
Re: Recommend me a quiet muffler
[QUOTE=SDTransAM;5117123] 9 out of 10 times its the driver hitting the gas pedal, haha.QUOTE]
I've actually been lighter on the gas pedal lately because of how obnoxiously loud it is when accelerating.
I've actually been lighter on the gas pedal lately because of how obnoxiously loud it is when accelerating.
#9
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Car: 1989 Camaro RS--
Engine: MPFI
Transmission: 700r4
Re: Recommend me a quiet muffler
I have a original exhaust 2.5 pipe on my 89 other then the new Cat I just replaced. It had the original one on it from 89, People would say nice sounding car. But since I changed the Cat it sounds like a rice burner. Don't get it. Would like some input.
#10
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Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: Recommend me a quiet muffler
I like Spintech. Not loud untill you floor it and it actually sounds good not obnoxious.
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