Muffler

[Al Evitts]

What is the concensus favorite muffler for the 4.0 engine. No drone but a good crisp sound \

 

Thanks Al

[Eagle]

I doubt there is a consensus. Personally, because I plan to keep my XJs and MJs for a long time, I buy the Auto Zone store brand with the lifetime warranty. That way, I only buy one muffler per truck -- ever.

[freakjeep93]

i know some people used flowmaster super 40s . i while never using one on a 4.0 like cherry bomb turbos or glasspacks there is many opinions

[89eliminator]

I doubt there is a consensus

 

i agree. its like asking what tire is the best.

 

i run a Flowmaster 40 on my 89. i love the sound. its loud, but not too loud.

[runner6]

We run the Flowmaster 40. We have been very pleased.

[JeepcoMJ]

third on the flowmaster 40

 

crappy sound clip

 

[socal1200r]

I used one of these chambered, all-welded mufflers from Thrush on my 4-cyl MJ:

 

http://www.summitracing.com/parts/WLK-1 ... mage=large

 

I highly recommend using one of these mufflers from Thrush or Summit. I've used them with great results, and they're considerably less expensive than something from Flowmaster, Magnaflow, etc.

[Darren]

I vote glasspack.

[Automan2164]

Flowmaster 40... Had one on the Eliminator, have one on the ZJ 4.0L... Sounds great at idle, a few people have thought I have the V-8 because of it... Sounds ricey at high RPM's, but you are pushing 6 cylinders through one muffler, so its going to no matter what ya put on.

 

Rob L.

[socal1200r]

Flowmaster and Magnaflow mufflers are about $70 from Summit. Thrush is $30, and a glasspack is about $25. For the money, I went with the 2.25" inlet/outlet, chambered, all-welded Thrush, for less than $40 delivered. But a lot of the auto parts stores carry these mufflers, and you might save a little on shipping if you bought one locally.

[1990 Pioneer 4x4]

Flowmaster

[ComancheKid45]

I run Flowtech Raptors on both my Jeeps...about $30 shipped from summit, just enough sound to let ya know its there but not overly loud at all.

[jimoshel]

Muffler? Who needs a muffler?

[500 MJ]

Flowmaster 40 series on both Renix setups here. Won't run anything but them now.

[streetjeep2.5]

Don't remember what number, but a flowmaster single in/dual out on my 2.5. Been on now for 6 years. Sounds the same as when first put on. No ricy sound, I think because of the dual out. BTW, I have turn down tips coming straight back out under the bumper, and resonating off the pavement adds to a "throaty" idle sound.

[jeepdoggydogB]

I have used Walker products for a long time for OEM sound, and they are usually cheap.

 

http://cgi.ebay.com/ebaymotors/ws/eBayI ... MEWAX%3AIT

[streetjeep2.5]

Haven't looked at Walker for a while, but when I bought an 85 Chev Cavalier at 65,000 miles, I bought a lifetime Walker and as long as I owned the car (over 200,000 miles) never had to pay for a muffler again!

[mjeff87]

Flowmaster and Magnaflow mufflers are about $70 from Summit. Thrush is $30, and a glasspack is about $25. For the money, I went with the 2.25" inlet/outlet, chambered, all-welded Thrush, for less than $40 delivered. But a lot of the auto parts stores carry these mufflers, and you might save a little on shipping if you bought one locally.

 

I picked up one of these from the local hot rod shop after work last night.......I'm definately impressed with it and I haven't even gotten it on yet (maybe tonight after work). Dual chamber, all welded...the thing weighs at least 5 lbs :eek:

 

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will be replacing the current glasspack.....it's cool and all, but has become a bit annoying, plus it doesn't have a spark arrestor

 

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[socal1200r]

...I picked up one of these from the local hot rod shop after work last night.......I'm definately impressed with it and I haven't even gotten it on yet (maybe tonight after work). Dual chamber, all welded...the thing weighs at least 5 lbs

 

That looks like the exact same muffler I'm running on my MJ now. Got it for less than $40 at a local auto parts store, which is actually a little less from Summit, since they're like $30 at Summit plus shipping. I like how it sounds, and the design/construction is VERY similar to the more expensive mufflers from FLowmaster and Magnaflow. It's funny, because on Summit's website, I think that Thrush muffler is made by Walker, because it has a Walker part number. Could be that a lot of the brand mufflers are made by just a few companies, and just rebranded, like they do with athletic shoes and such, lol...

[Al Evitts]

Thanks for all the info. I am going with a Hush Thrush or a Flowmaster 50. Thanks again the input was terrific.

 

Al

[tmanhollister]

i have the newish flowmaster super44 on mine...sounds VERY throaty...even with a small exhaust leak...and i have the flowmaster 50 on my 93 xj. not very loud but nice tone.

[LEAD_NOT_FOLLOW]

Don't know if this will help or not, but here is a short clip of my XJ.

 

4.6L Stroker, Flow Daddy Header, Flowmaster Muffler

 

http://jeeptv.com/video/6423

[kro10000]

My Mj has a flowmaster 40 with no cat and sounds great, my bro has a super 44 on his 4.7 stroker TJ and it sounds pretty close, just louder. Has anyone tried a hooker aerochamber on a jeep?

[Al Evitts]

Got the Hush Thrush on today. Has a little throaty sound but no drone. I can now hear the radio. Thanks for the info.

 

Al

[mule13]

You should buy a header and just run straight 4" pipes from it out the back.

when your in low range and really rapping out the engine it really draws attention

;)

 

just kidding i have the generic brand flowmaster on mine