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Flowmaster on 2012 JK

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Old Aug 19, 2012 | 05:17 PM
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  #41  
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Originally Posted by Flip94ta
Thanks for the info KH202, can you tell about how much the factory muffler weighs?
Ha no problem, I was on an exhaust kick for a month or two experimenting with a few setups. The factory muffler weighs maybe 30-40 lbs I'd guess
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Old Aug 20, 2012 | 02:21 AM
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Have you had any change in performance or fuel economy with the muffler off. Did the check engine light come on?
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Old Aug 20, 2012 | 06:03 AM
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+1!!!!!!!! great info guys! Thanks!
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Old Aug 20, 2012 | 06:38 AM
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What would you guys suggest as a replacement to a stock muffler with good sound and preferably a single exhaust? Flowmaster 40 series?
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Old Aug 20, 2012 | 04:16 PM
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Originally Posted by moz832006
Flowmaster part#42583 or 842583 stainless steel Muffler-$99.99 at pep boys, two 2 1/2 in wide 90 degree L shapped elbows $15-pep boys, two matt black 2 1/2in inlet tips 45.99 autozone, $100 to have welded. Total $265, even cheaper if you know someone who welds. Used matte black high temperature grill spray paint to paint the pipes and muffler.

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=355680"/>

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=355682"/>

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=355683"/>

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=355684"/>
Do you have a picture from under your jeep. I want to see how you did this. Thanks
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Old Aug 21, 2012 | 10:29 AM
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Originally Posted by Redjk777

Do you have a picture from under your jeep. I want to see how you did this. Thanks
This is how they did it at the muffler shop. The tips aren't welded on yet. Let me know if you want me to zero in on something.

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Old Aug 21, 2012 | 01:09 PM
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Thanks. Perfect.
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Old Aug 21, 2012 | 02:09 PM
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That clip does sound good!! The 44/40 series is their most aggressive sound, this chart might help.

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Old Aug 21, 2012 | 03:14 PM
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Originally Posted by Clark@AutoAnything
That clip does sound good!! The 44/40 series is their most aggressive sound, this chart might help.

Guess my 80 series is not that far behind in sound. I like it not being too loud.
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Old Aug 21, 2012 | 03:18 PM
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Sound is really tough because what is loud to one person, might be quiet to the next. The chart just tells you where you can expect to be.

I don't like drone and didn't want anything too loud so on my last truck I went with the 50series SUV and it was really quiet, I almost could not tell I had it on. I also put a 40 series on my old 2001 4Runner and you could hear me coming 2 blocks away!

Sounds clips (with headphones for optimal acoustics) are very helpful!
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