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  #13  
Old 12-31-2009, 08:35 AM
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Re: Custom exhaust installed, new custom shop found in NOVA!

Thanks Scott...

Is there anything I can do to get rid of the 2000 RPM drone? I may take it back and ask to fit a resonator somewhere in there. Definitely better than the FM I had on there before, but still annoying... Any ideas?
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Old 12-31-2009, 09:06 AM
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Re: Custom exhaust installed, new custom shop found in NOVA!

yep....if you dont have a resonator...most of the time you will have drone.
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  #15  
Old 12-31-2009, 09:25 AM
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Re: Custom exhaust installed, new custom shop found in NOVA!

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Originally Posted by Scottina06 View Post
yep....if you dont have a resonator...most of the time you will have drone.
Where do I find such a mystical creature for the 4.7 WJ?
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  #16  
Old 12-31-2009, 09:26 AM
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Re: Custom exhaust installed, new custom shop found in NOVA!

the shop that installed your Kolak exhaust could hook you up....or you may find one from a stock exhaust here. There are also lots of aftermarket resonators
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  #17  
Old 12-31-2009, 11:32 AM
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Re: Custom exhaust installed, new custom shop found in NOVA!

Were their prices good Ben?
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  #18  
Old 12-31-2009, 01:11 PM
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Re: Custom exhaust installed, new custom shop found in NOVA!

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Originally Posted by Chaoul1 View Post
Were their prices good Ben?
$125/hour, which is higher than I like to pay, but they won't charge for all of the hours. Not to mention that their work is so perfect, I have no issue paying for it.

You should check it out, the shop is amazing, especially the cars...They have about 15 or 20 in various stages.

BTW, I am going to clean up and sell my original Kolak 3" cat-back that was on there. I switched from Flowmaster to magnaflow, and just decided to start over clean...
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Old 12-31-2009, 01:20 PM
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Re: Custom exhaust installed, new custom shop found in NOVA!

How long did it take them to do yours? They did a nice tight job on your Jeep I bet it was well worth it.
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  #20  
Old 12-31-2009, 01:37 PM
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Re: Custom exhaust installed, new custom shop found in NOVA!

I had them do some other things as well, but the exhaust only took about 1-1.5 hours? WELL worth it, it is so tight, I could hang on it...
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  #21  
Old 01-01-2010, 11:27 AM
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Re: Custom exhaust installed, new custom shop found in NOVA!

Resonators typically are not needed with the correct muffler. Not on a WJ anyways.

What year is your WJ Ben? I can't use my '02 as an example, but my buddy Brian's (NJWJ on this site, he is a lurker) '04 (with the 2 large precats and no main cat) had resonance issues with the Magnaflow large case (5x11x22) which should be the same as what you have. He ended up re-doing the exhaust with IIRC the same Magnaflow muffler and then a small spintech muffler before it. His is very quiet now, but he is happy with it. The '04s are notorious for drone issues, because they changed the catalytic converter arrangement.

I'd look into throwing in a small Magnaflow muffler upstream of the 5x11x22 to act as a resonator.
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  #22  
Old 01-01-2010, 11:46 AM
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Re: Custom exhaust installed, new custom shop found in NOVA!

Ryan,

1st of all, thanks for the help, and I want one of your throttle bodies...

2nd, I have an '02, with the pre-cats, and i just installed the high-flow Kolak cat, and the magnaflow big box. I am about to rip it out. I don't think there is enough room to add another muffler upstream??

Thanks, Ben
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  #23  
Old 01-01-2010, 12:03 PM
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Re: Custom exhaust installed, new custom shop found in NOVA!

Quote:
Originally Posted by bruckerben View Post
Ryan,

1st of all, thanks for the help, and I want one of your throttle bodies...

2nd, I have an '02, with the pre-cats, and i just installed the high-flow Kolak cat, and the magnaflow big box. I am about to rip it out. I don't think there is enough room to add another muffler upstream??

Thanks, Ben
Ben,

You're welcome. Glad to help.

That is really strange that you are having resonance issues with an '02. I'm wondering if perhaps you have another issue that is causing the nasty drone, like a ill-placed hanger. Either that, or maybe your sense of hearing is much more sensitive than most. Exhaust is a very subjective thing and a setup that is perfect to one person might make another person rip their hair out due to overall noise/tone/resonance, etc.

I ran a 5x8x18 Magnaflow (which is essentially one step more aggressive than yours) behind a Carsound cat and honestly it wasn't loud enough. With that being said, I did feel at times like it resonated more than it should have, especially stop and go around town type of driving. Oddly enough, I switched to the smallest round muffler Magnaflow sells and although it is WAY louder, I am much happier with the sound in all modes of driving.

I would think there has to be some way to add a larger muffler upstream. You should be able to fit a 30" Magnaflow.

Please contact me via PM about the Ported TB.
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  #24  
Old 01-01-2010, 01:09 PM
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Re: Custom exhaust installed, new custom shop found in NOVA!

wk...wj....zj....corvette, chevete....no reso on a aftermarket exhaust will mean drone...somewhere...somehow.
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