Muffler - Does it matter? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > Muffler - Does it matter?

FS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitTHE NEW! VANCO DUAL MODE 15/16″ Big Brake Kit w/BlaFS: Wranger BRIGHT License Plate LED! Just $3! Great value

Reply
Unread 10-15-2013, 01:47 PM   #1
Line58
Registered User
1998 TJ Wrangler 
 
Join Date: Aug 2011
Location: Nyssa, Oregon
Posts: 466
Muffler - Does it matter?

The other week my Jeep began sounding like a demolition derby car (really rough, raw sound. Makes a bub bub bub sound when I engine brake). From what I have been told and read it sounds like its a muffler issue. Assuming that this is correct, I have two questions:

First, can driving the Jeep like this damage the cat or engine?

Second, what is the best aftermarket muffler? I understand that an aftermarket muffler isn't going to make a noticeable improvement in how my 2.5 performs, however I don't want to pick one that will make my rig sound like crap either. Any suggestions would be greatly appreciated.

__________________
[URL="http://whateversclever.userboard.net/"]http://whateversclever.userboard.net/]Whatevers Clever Forum[/URL]
[URL="http://www.jeepforum.com/forum/f9/ax5-ax15-swap-write-up-murphys-law-edition-1515070/"]TJ AX5 to YJ AX15 Swap[/url]
Line58 is offline   Reply With Quote
Unread 10-15-2013, 01:48 PM   #2
bobjp
Registered User
 
Join Date: Aug 2005
Posts: 1,331
You should probably confirm that it's the muffler then worry about what to replace. There's a hole somewhere.
__________________
97 TJ sport.
bobjp is offline   Reply With Quote
Unread 10-15-2013, 01:52 PM   #3
sterdest
Registered User
1997 XJ Cherokee 
 
Join Date: Jun 2010
Location: idaho falls, Idaho
Posts: 145
It would be pretty easy to verify that there is a hole. And no a muffler isn't really important. The emission laws of your state might require one but all it really does is "muffle" the exhaust sound to make it quieter. And borla makes a very nice one but something cheap would be just as good if you aren't going to replace more. I would look into an edlebrock or something similar.
__________________
$$Just Empty Every Pocket$$
sterdest is offline   Reply With Quote
Unread 10-15-2013, 01:55 PM   #4
GOLENJEEPTJ
Running Secretly Amok!
 
GOLENJEEPTJ's Avatar
2002 TJ Wrangler 
 
Join Date: May 2007
Location: Ventura ,CA., California
Posts: 9,672
I would look into a stainless Magnaflow sound great and last a long time.
GOLENJEEPTJ is offline   Reply With Quote
Unread 10-20-2013, 09:10 PM   #5
Line58
Registered User
1998 TJ Wrangler 
 
Join Date: Aug 2011
Location: Nyssa, Oregon
Posts: 466
Went a head and ordered a Dynomax Turbo muffler. It's about 1/5 the price of the Magnaflow and has good reviews. Are there any draw backs to using just the muffler with the stock tail pipe, as opposed to ordering the Dynomax cat back system?
__________________
[URL="http://whateversclever.userboard.net/"]http://whateversclever.userboard.net/]Whatevers Clever Forum[/URL]
[URL="http://www.jeepforum.com/forum/f9/ax5-ax15-swap-write-up-murphys-law-edition-1515070/"]TJ AX5 to YJ AX15 Swap[/url]
Line58 is offline   Reply With Quote
Unread 10-20-2013, 10:15 PM   #6
Maverickxeo
Registered User
2002 TJ Wrangler 
 
Join Date: Jan 2010
Location: Wetaskiwin, Alberta
Posts: 1,879
Quote:
Originally Posted by Line58 View Post
Went a head and ordered a Dynomax Turbo muffler. It's about 1/5 the price of the Magnaflow and has good reviews. Are there any draw backs to using just the muffler with the stock tail pipe, as opposed to ordering the Dynomax cat back system?
An aftermarket muffler will just sound different.

In MOST cases, provided the muffler is NOT a restriction (its NOT on the TJ), changing the muffler will do nothing but sound differently.

If you want the catback system, it will change the sound again (being that again, the exhaust on a TJ is NOT restrictive).

If you want a drawback, it could be the sound if you dont like it (too loud, too much drone, etc), otherwise it shouldnt do anything negative.

You MAY even get a SLIGHT increase in power (not enough to make it into a speed demon or anything, but any dyno Ive seen from a TJ exhaust is very minimal).
Maverickxeo is online now   Reply With Quote
Unread 10-21-2013, 09:34 AM   #7
jeepinhokie
built not bought
 
jeepinhokie's Avatar
2004 TJ Wrangler 
 
Join Date: Apr 2010
Location: MD, Maryland
Posts: 2,297
Quote:
Originally Posted by Line58 View Post
Went a head and ordered a Dynomax Turbo muffler. It's about 1/5 the price of the Magnaflow and has good reviews. Are there any draw backs to using just the muffler with the stock tail pipe, as opposed to ordering the Dynomax cat back system?
the dynomax super turbo muffler will do just fine.

though the shape and size might be different than the OEM one, so the tailpipe will have to be modified to fit properly.

which part number did you get?
__________________
HOKIES UNITED!

A Hokie build

check out my jeepin videos!
jeepinhokie is offline   Reply With Quote
Unread 10-21-2013, 10:35 AM   #8
ddecker2010
Registered User
1997 TJ Wrangler 
 
Join Date: Nov 2011
Location: Liberty, Missouri
Posts: 37
It could be your exhaust manifold too since they are known for cracking, just my .02!
__________________
97 TJ Black I6 5speed | 2.5in Skyjacker | 1in Zone Offroad BL MML | 32in BFG on 15in DC-1 | Smittybilt bumpers/steps |
ddecker2010 is offline   Reply With Quote
Unread 11-08-2013, 02:31 PM   #9
Line58
Registered User
1998 TJ Wrangler 
 
Join Date: Aug 2011
Location: Nyssa, Oregon
Posts: 466
Quote:
Originally Posted by jeepinhokie View Post
the dynomax super turbo muffler will do just fine.

though the shape and size might be different than the OEM one, so the tailpipe will have to be modified to fit properly.

which part number did you get?
The part number is 17731.
__________________
[URL="http://whateversclever.userboard.net/"]http://whateversclever.userboard.net/]Whatevers Clever Forum[/URL]
[URL="http://www.jeepforum.com/forum/f9/ax5-ax15-swap-write-up-murphys-law-edition-1515070/"]TJ AX5 to YJ AX15 Swap[/url]
Line58 is offline   Reply With Quote
Unread 11-08-2013, 02:37 PM   #10
Line58
Registered User
1998 TJ Wrangler 
 
Join Date: Aug 2011
Location: Nyssa, Oregon
Posts: 466
I finally installed the muffler this morning. I cut off input pipe as close to the muffler as possible and cut the tail pipe flush with the weld on the muffler to maximize the length of pipe in the hopes the Dynomax exhaust would be long enough to reach. It wasn't. Fortunately the Napa down the street carries 14" x 2.25" straight tube. After inserting 7.5" of new tube between the muffler and the pipe from the cat I was able to get everything put together.
__________________
[URL="http://whateversclever.userboard.net/"]http://whateversclever.userboard.net/]Whatevers Clever Forum[/URL]
[URL="http://www.jeepforum.com/forum/f9/ax5-ax15-swap-write-up-murphys-law-edition-1515070/"]TJ AX5 to YJ AX15 Swap[/url]
Line58 is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.