New Muffler - Page 2 - JeepForum.com

Reply
 
LinkBack Thread Tools
post #16 of 32 Old 11-24-2012, 11:15 PM
nicklopic
Registered User
1998 ZJ 
 
Join Date: Aug 2011
Location: Rocky Point
Posts: 1,124
Its pretty much a pipe with a few metal pockets that stick out and its considered a muffler lol

It would be loud as hell


98' ZJ 4.0
4.5" short arm, 33" Courser MXTs, custom stubby bumper, skids, someother stuff
nicklopic is offline  
Sponsored Links
Advertisement
 
post #17 of 32 Old 11-25-2012, 12:42 AM Thread Starter
jeepinbassist
Registered User
1995 ZJ 
 
Join Date: Oct 2012
Location: Murray
Posts: 427
Nevermind about what they do but you still need the cat on it right?
jeepinbassist is offline  
post #18 of 32 Old 11-25-2012, 06:00 AM
Texas ZJ1
Jeep Jedi Master
 
Texas ZJ1's Avatar
1994 ZJ 
 
Join Date: Mar 2003
Location: Omaha
Posts: 20,322
Yes, even if you don't have one because you or someone else took it off, a catalytic converter is required. JF policy is to close any thread that discusses removal of the cat.

Hunter

04 4.7 HO, limited

08 Z71 Suburban, front leveling kit with rear spacers. 285/65 18s Nitto TerraGrappler G2s

94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
Red Jeep Club Member
REDNECK JCM
Texas Jeep Owner #6
USN Jeep Club #4
http://www.kevinsoffroad.com/
602.841.3355

For your performance needs:

kolak@kolakperformance.com
480.998.366
Texas ZJ1 is offline  
post #19 of 32 Old 11-25-2012, 06:28 AM
Joeyicu
Registered User
 
Joeyicu's Avatar
1998 ZJ 
 
Join Date: Jul 2006
Location: Columbia
Posts: 585
That is very communist of the forum, but I see how it is a good idea on the forums part

bottom line with catalytic converts are, that you will not net any gains from removing it. The back pressure a high flow cat offers gains you power vs a straight pipe in any situation. That coupled with the loss of mpg, because your trucks check engine line will come on, and the ecu will run in open loop safe mode all the time, its stupid to do such a thing.

I like the 18" pipe muffler I have. I have a 318 though, I dont know if I would recommend this on a 4.0, it may get a bit tiney and ricey of a sound going on.


my video, don't mind the brake noise, they where wet and I was being cautious. Thats an 18" pipe where the muffler once was, everything else stock. No power gains that I know of, just noise, but oh so good noise.

{2005 WK Hemi }(1998 ZJ 5.2 - 3.5 IRO 31s) [1984 F250 6.9]
Joeyicu is offline  
post #20 of 32 Old 11-25-2012, 06:53 AM
torchd
Registered User
2003 WJ 
 
Join Date: Jan 2010
Location: Chicago
Posts: 2,730
I have a 4.SLOW like you, I love how my MaganFlow Cat and MagnaFlow muffler sound. Also my whole exhaust set up is all 2.5" from my header to my tail pipe.


I need to get new exhuast vids. Since the exhaust has now broken in, it got a tad louder and a lot deeper.













1998 Jeep Grand Cherokee Laredo
2" BB Pucks | SkyJacker Hydro Shocks | Rubicon Wheels | Cooper 245/75/16 Tires

2002 Trans Am
Cam, Full Exhaust, Stock Heads, Stock LS6 Intake and Stock 10 bolt with 3.42s
420 RWHP and 382 RWHTQ
torchd is offline  
post #21 of 32 Old 11-25-2012, 05:37 PM Thread Starter
jeepinbassist
Registered User
1995 ZJ 
 
Join Date: Oct 2012
Location: Murray
Posts: 427
What is the stock muffler tubing size on the 4.0?
jeepinbassist is offline  
post #22 of 32 Old 11-25-2012, 07:41 PM Thread Starter
jeepinbassist
Registered User
1995 ZJ 
 
Join Date: Oct 2012
Location: Murray
Posts: 427
I just picked up the magnaflow glasspack. Decided to go with it because from videos I watched they sound good and it was only thirty bucks and pep boys. I also don't really care what my neighbors think. Especially because they already put up with this jack*** that lives across the street and he doesn't even have a muffler.
jeepinbassist is offline  
post #23 of 32 Old 11-25-2012, 09:22 PM
nicklopic
Registered User
1998 ZJ 
 
Join Date: Aug 2011
Location: Rocky Point
Posts: 1,124
2.25" is factory

98' ZJ 4.0
4.5" short arm, 33" Courser MXTs, custom stubby bumper, skids, someother stuff
nicklopic is offline  
post #24 of 32 Old 11-26-2012, 12:15 AM Thread Starter
jeepinbassist
Registered User
1995 ZJ 
 
Join Date: Oct 2012
Location: Murray
Posts: 427
That will make it a lot easier to put the glasspack on. It's basically a direct weld on. Just a little cutting and bending.
jeepinbassist is offline  
post #25 of 32 Old 11-28-2012, 04:42 PM Thread Starter
jeepinbassist
Registered User
1995 ZJ 
 
Join Date: Oct 2012
Location: Murray
Posts: 427
Just got the glasspack on. The only thing I had to buy was three clamps and an adapter. So the whole thing only cost me about $40 and it sounds awesome. Nice low tone that isn't annoyingly loud at idle and it's really loud and powerful sounding when I rev it. I've already noticed an increase in power. Now I'm thinking about adding a cold air intake.
jeepinbassist is offline  
post #26 of 32 Old 11-29-2012, 01:30 AM
Joeyicu
Registered User
 
Joeyicu's Avatar
1998 ZJ 
 
Join Date: Jul 2006
Location: Columbia
Posts: 585
With the stock stuff in front of the glasspack you should be alright for a long while. It has always amazed me at how far back mopar will push that converter. I was under the impression for them to be effective, they need to be at a certain point in the exhaust stream, like way closer to the exhaust manifolds.

I am also confused as to why my truck, whos honeycomb is bouncing around in the stock cat, has not thrown a downstream o2 sensor code for cat effeciency. Odd.

Anyways, post a video of the new exhaust.

{2005 WK Hemi }(1998 ZJ 5.2 - 3.5 IRO 31s) [1984 F250 6.9]
Joeyicu is offline  
post #27 of 32 Old 11-29-2012, 02:41 AM
zjgil
Registered User
1998 ZJ 
 
Join Date: Nov 2012
Location: North Salt Lake
Posts: 29
Yeah I want something that gives my 4.0 like a deep aggressive sound but not overkill, not like a Honda civic with 3 foot tall spoiler kind of sound. What would I need to achieve that sound I want? And where could I get it?
zjgil is offline  
post #28 of 32 Old 11-29-2012, 05:12 AM
Joeyicu
Registered User
 
Joeyicu's Avatar
1998 ZJ 
 
Join Date: Jul 2006
Location: Columbia
Posts: 585
your motor is to big and to different to a small displacement honda motor to ever sound like that. The worst you could do with a 4.0 is just be annoying and not very good sounding, thats all. Get on you tube and start listening. The proof is in the HD video pudding.

{2005 WK Hemi }(1998 ZJ 5.2 - 3.5 IRO 31s) [1984 F250 6.9]
Joeyicu is offline  
post #29 of 32 Old 11-29-2012, 08:39 AM
PolkaPower
Registered User
1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss
Posts: 19,509
Quote:
Originally Posted by Joeyicu View Post
That is very communist of the forum, but I see how it is a good idea on the forums part
Communism http://www.merriam-webster.com/dictionary/communism
Attached Thumbnails
Picture 25.png  
PolkaPower is offline  
post #30 of 32 Old 12-06-2012, 01:11 AM Thread Starter
jeepinbassist
Registered User
1995 ZJ 
 
Join Date: Oct 2012
Location: Murray
Posts: 427
I just put on a cold air intake minus the cold air part and it made it sound much louder on the back and under the hood. When it gets up around 3000 rpm it starts to sound like a muscle car taking off. I love the sound it gives a 4.slow. But it'll probably kill my MPG, but it is a Jeep.
I'll post a video of it soon and I'll see if I can also make it so you can hear the sound on the front end.
jeepinbassist is offline  
Reply

Tags
muffler

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome