Need a new Muffler (open to opinions) -

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post #1 of 13 Old 05-27-2009, 10:15 PM Thread Starter
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1999 WJ 
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Location: Long Island, NY
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Need a new Muffler (open to opinions)

Hi everybody
I need a new muffler and cat, the stock one is hanging down and is beat up bad. Everyone is telling me to get a flowmaster 40 but i find those to be to loud for me. Im kinda leaning more towards one of the flowmaster 50 models because they seem quieter.

Basically I want a muffler and cat that is small and quiet so it can be tucked up as high as possible under the jeep.

Thanks guys

'15 JK Stock | 4k Miles | Bone Stock
SOLD '99 WJ I6 | Claytons LA | 6.5" | HP D44 | F9" | 35's
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post #2 of 13 Old 05-27-2009, 10:32 PM
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Email, he is the exhaust guru.
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post #3 of 13 Old 05-27-2009, 10:42 PM
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I wouldn't get the flowmaster 40 for a six cylinder. I think the 40 series sound better on V8's and sound weird on six cylinders.
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post #4 of 13 Old 05-27-2009, 11:22 PM
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I had a thrush turbo muffler on my ZJ. Sounded good, and was only $20 bucks. Got to the point where it was too quiet for me so I cut it off and and running it dumped after the cat.
Thrush Turbo Muffler:

Dumped after the cat:

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post #5 of 13 Old 05-27-2009, 11:39 PM
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I bought a cat from AutoZone for our ZJ 5.9 Limited for $113 It was a Flowmaster. Then I put just a turbo behind it.
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post #6 of 13 Old 05-28-2009, 09:57 AM
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I just got Cherry Bomb Turbo II from autozone for $15 and get it installed for $30. Its small and not that loud. It has a nice sound when the car idles

1993 Jeep Grand Wagoneer V8 5.2L 136.431 miles
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post #7 of 13 Old 05-28-2009, 10:17 AM
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I really liked the FM70 on my 4.0L.

'04 WJ, 6" Clayton LA's, 242 SYE, 35" BFG MT KM2's, 4.56 gears, & D44a locked
'14 WK2 Limited w/5.7L, ORAI, & Tow Package
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post #8 of 13 Old 06-02-2009, 10:44 AM
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I just put a Walker Quietflow 3 in my daughter's 4.0L '96 Laredo last week and she likes the sound. They had a $40 mail in rebate going until 5/31/09, so it was half off the regular $80 price.

'93 Limited (sold), '96 Laredo
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post #9 of 13 Old 06-02-2009, 12:00 PM
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Originally Posted by ArloGuthroJeep View Post
I really liked the FM70 on my 4.0L.
X2 on that if you want it quiet but a nice sound. Personally I love my super 40, but there's no question the 70 has a great sound.

2003 WJ in Jeep Green Metallic, 4.0/242/4.10's. 4" Teraflex springs w/ RE monotube shocks and IRO short arms, cheap intake w/ amsoil filter, 2.5" hi flow cat and back exhaust, lots of lights and other misc crap.

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post #10 of 13 Old 06-02-2009, 12:06 PM
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I really like my magnaflow! It's not that loud until you press hard on the gas. It's also the best flowing muffler for jeeps.

2002 Grand Cherokee 4.7 HO
3" IRO Coils, MX6's, JKS Adj Trackbar, Rancho SS, KOR Dual SS, Addco rear, BBK 70mm TB, K&N CAI, Magnaflow catback w/ high flow cat and 265/75 M/T MTZ's on 16" M/T Classic II's
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post #11 of 13 Old 06-02-2009, 12:17 PM
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flowmaster 40 with 6cylinder on youtube

I went with a dynomax from advance for $40 and it is quieter than the flowmaster. Not as quiet as stock.
sounds like this
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post #12 of 13 Old 06-02-2009, 12:27 PM
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i have a magnaflow, its very quiet inside, but outside it sounds like a beast, its a great sound.
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post #13 of 13 Old 06-02-2009, 02:09 PM
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I went with the Flow50DF. I think it sounds great on the I6. I'd go with a 50 if you want mild to aggressive and a 70 if you want mellow.

2000 WJ 4.5L - Stroked, Locked, & Long-Armed
Looking for 6" WJ springs!
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