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  #13  
Old 05-29-2012, 03:03 PM
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Re: Did not listen, now paying the price

Not to hi-jack the thread but, for those that wanted to hear this, I finally (thanks to the kids/grandkids) posted a couple videos of the 5.7 with open exhaust: My 5.7 WK at the drags...I hope!
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  #14  
Old 07-31-2012, 09:47 PM
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Re: Did not listen, now paying the price

i'm having the same problem, installed a MBRP cat back system on my 06 4.7 limited, too loud and cant stand the droan... did you install the walker muffler and if so are you happy w/it?

thanks!
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  #15  
Old 08-01-2012, 01:33 PM
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Re: Did not listen, now paying the price

Flowmaster 50. It's a good compromise.
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  #16  
Old 08-06-2012, 11:33 AM
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Re: Did not listen, now paying the price

Seems like mixed reviews on the flowmaster 50s... I have a similar WK (limited, 4.7, QDII, KN intake, MBRP cat back, 87 octane tune) how is the interior noise/droan level? The highway/uphill 2000-2500rpm droan is whats killin me!
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  #17  
Old 08-06-2012, 01:14 PM
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Re: Did not listen, now paying the price

Quote:
Originally Posted by vinnie2001 View Post
Seems like mixed reviews on the flowmaster 50s... I have a similar WK (limited, 4.7, QDII, KN intake, MBRP cat back, 87 octane tune) how is the interior noise/droan level? The highway/uphill 2000-2500rpm droan is whats killin me!
No drone.
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  #18  
Old 08-06-2012, 01:39 PM
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Re: Did not listen, now paying the price

Lots of folks, including myself have paid good money to find out a catback, and a CAI, are a total waste of $ with a WK. Mine was Magnaflow and AFE II. All bark, no bite, and you lose low end and midrange throttle response versus stock, in addition to being annoyingly noisy. Keep those stock and get a ported TB and tuner. It will be more responsive and fun to drive, with no roar, drone or intake howl.
I also tested the 85mm ported TB with both the stock intake, and then the AFE II for a week at a time, and the stock intake won hands down.
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  #19  
Old 08-06-2012, 03:06 PM
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Re: Did not listen, now paying the price

I guess we live we learn! I've been doing some research and it looks like the Flowmaster 50 Big-Block series (pn 53050) may get me back to OEM sound levels w/some increase in flow... I trashed the OEM system pulling it out so I'll need to use the stainless steel 3" pipes that came w/the MBRP system. Interesting stuff on the TB... might wake up the 4.7 a bit?
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  #20  
Old 08-06-2012, 06:09 PM
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Re: Did not listen, now paying the price

I might have a different and cheaper solution for you. After taking ownership of my '07 WK I had a Flowmaster muffler installed and I was not happy with the results when the variable cylinder system activated at highway speeds. The decibel levels and the drone sound was too much for me and considering that my two year old is sitting right atop the muffler in her rear childseat, something had to be done. I found the best solution to lower vehicle noise was by installing a couple of sheets of sound dampening material underneath my floormattes (you can glue it on, if you want it permanently attached) and in the cargo area. In the trunk I added a rubber cargo liner to retain functionality. It works wonderful, even with very cheap materials, such as a textile cargo liner from Big Lots @ $6.99 per sheet. Cut to fit and the noise will go dramatically down. If you want a more expensive solution, try some of the Dynamat products etc. Hope this helps and good luck!
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  #21  
Old 08-06-2012, 09:37 PM
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Re: Did not listen, now paying the price

Thank you for that advice! What series Flowmaster muffler did you install? I orderd the Flowmaster 50 Big Block #53054 after reading that they were close to stock as far as sound levels go...
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  #22  
Old 08-06-2012, 10:30 PM
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Re: Did not listen, now paying the price

I am not sure what model or series Flowmaster I ended up with - the mechanic chose the model based on their inventory and my description of a 'quiet' muffler. I guess that his definition of 'quiet' is alot different from mine lol

In terms of improving your car, sound dampening is a must in my book. It's very cheap - you can use a wide range of materials, including leftover carpet (a thicker woven kind with a heavy rubber lining works great). It makes longer rides much better, your stereo will perform significantly better and you don't even have to listen at a high volume to hear the details, which is a benefit when riding with a sleeping child...

Best wishes
WK
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  #23  
Old 08-07-2012, 10:50 AM
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Re: Did not listen, now paying the price

interesting read from another group...

http://www.jk-forum.com/jk-show-tell...uffler-109440/
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  #24  
Old 08-10-2012, 08:58 PM
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Re: Did not listen, now paying the price

OK, so I received and installed the Flowmaster 50 series Big Block (53054) muffler today! Install was easy, just had to trim 1.5" from the exhaust pipe, Flowmaster was a bit longer than the MBRP. I also got rid of the goofy 4" tip and installed a 3" turndown tip (painted it black) reformed the hanger a bit to tuck it up so just the tip is showing. I am really pleased with the sound. It is much tamer than the MBRP but defiantly has a nice rumble and if you jab it you notice! still a little droan at highway speeds (75 mph at ~2300 rpms) but not too bad. ONE thing,,, Flowmaster has discontinued the 50 series Big Block muffler!!!! They are still in distribution but i did have a little trouble finding one...
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