Catback Exhaust Suggestions - JeepForum.com
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post #1 of 8 Old 10-12-2019, 10:51 AM Thread Starter
mpd2434
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Catback Exhaust Suggestions

It's time to replace my muffler but the pipe leading to my cat has seen better days so looking to get a full catback. I really wanted to get a kit that has the muffler where the resonator is on the newer JK's for better clearance in the rear. I can't seem to find a system that's not overly loud. I would like it to sound as close to stock as possible or slightly louder. At my age I'm not into the loud or droning mufflers. Any suggestions would be appreciated.

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post #2 of 8 Old 10-14-2019, 12:59 PM
cranbiz
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I just installed a Pypes Performance high ground clearance catback system.

They have 2 choices, the SJJ21R has a smaller muffler where the resonator is and it's definitely a more aggressive sound. The SJJ21S has a larger muffler but it does require relocating the evap canister.

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post #3 of 8 Old 10-14-2019, 02:45 PM Thread Starter
mpd2434
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Thanks, I may have to go with a standard catback with the muffler in the rear then. I don't want to get into moving anything. Any thoughts on the Banks Monster catback? I had a Banks on my 2004 Rubicon and it wasn't loud at all. Different jeep and different motor though. It's reasonable priced to at $318.00.
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post #4 of 8 Old 10-15-2019, 05:05 PM
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An economical solution that replicates stock fit, routing, and sound is Walker which is sold at retail auto parts stores such as O’Reilly’s and Autozone. It’s not a kit, but you buy the pieces you need.


For what you are wanting to achieve, I think you would do well by going to a custom exhaust shop that bends pipes etc.

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post #5 of 8 Old 10-16-2019, 04:31 AM
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Have you noticed any drone or resonance? I'm technically an authorized Pypes dealer but I've been hesitant to recommend their JK exhausts because I always am concerned about annoying drone & resonance.

Quote:
Originally Posted by cranbiz View Post
I just installed a Pypes Performance high ground clearance catback system.

They have 2 choices, the SJJ21R has a smaller muffler where the resonator is and it's definitely a more aggressive sound. The SJJ21S has a larger muffler but it does require relocating the evap canister.

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Member: Specialty Equipment Market Association
Telephone: 480 998-3661

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post #6 of 8 Old 10-16-2019, 04:32 AM
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Is your JK an Unlimited?

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Originally Posted by mpd2434 View Post
Thanks, I may have to go with a standard catback with the muffler in the rear then. I don't want to get into moving anything. Any thoughts on the Banks Monster catback? I had a Banks on my 2004 Rubicon and it wasn't loud at all. Different jeep and different motor though. It's reasonable priced to at $318.00.

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post #7 of 8 Old 10-16-2019, 08:53 AM
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Quote:
Originally Posted by Kolak View Post
Have you noticed any drone or resonance? I'm technically an authorized Pypes dealer but I've been hesitant to recommend their JK exhausts because I always am concerned about annoying drone & resonance.
I'll know better this weekend as I'll be driving to go wheeling. It is definitely a more aggressive sound, but I haven't run it for more than about 5 minutes to this point.

Full disclosure: I won this in a forum giveaway. However, if it has things I don't like, I'll say so. So far, it installed fairly quickly and came with all the required hardware. It appears to be of quality components. The 2 Dr will need to cut the mid pipe to fit, there is ample length to the pipe, even for a 4 Dr. The instructions were decent, the U Tube videos are good to see what you actually need to do.

It does offer a lot more ground clearance. My guess is, if you want a much quieter exhaust, you need to stay stock or relocate the evap canister so you can use the Pypes kit with the larger muffler (SJJ21S).

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post #8 of 8 Old 10-21-2019, 03:08 PM
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Ok, I drove about 600 miles this weekend to go wheeling. There were plenty of longer grade climbs.

This exhaust does a couple of things. It does help the jeep breathe better. I actually got about 1 MPG more on this trip. I also didn't hit it once on anything.

The cons were it's louder than most cat backs out there. When downshifting to go up a mountain incline, the noise level was proportionally louder.

If you have a daily driver, the SJJ21R is probably not the exhaust for you, go with the SJJ21S.
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12 JK, 2.5" Teraflex lift, Bilstein 5100's, BFG KM3's 37x12.5/R17
17 WK2 Trailhawk
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