Dynomax evolution competition exhaust - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-05-2013, 06:41 PM   #1
Jeeper
 
DirtyTeddy's Avatar
 
Join Date: May 2013
Posts: 428
Dynomax evolution competition exhaust

Would love to see the bulky muffler out of the way, but noticed that there is no heat shield around this particular setup. Does this affect anything?

Also if you have this setup please give the pros and cons!

__________________
RnR
DirtyTeddy is offline   Quote Quick Reply
Old 08-06-2013, 01:03 AM   #2
Jeeper
 
TRAUMAhead's Avatar
 
Join Date: Apr 2012
Location: Cen Cal
Posts: 627
Been running for the past year, no problems (4 door).

3.8L, 35s, automatic, 5:38s. Drones like crazy below 1500 RPM while cruising, all other speeds there's no drone/minimal drone. Tone quieted down a lot after a year, thinking of switching exhaust.

TRAUMAhead is offline   Quote Quick Reply
Old 08-06-2013, 01:13 AM   #3
Jeeper
 
jkmohican's Avatar
 
Join Date: Aug 2012
Location: Detroit, Michigan
Posts: 1,236
No problems with it. This exhaust doesn't need a heat shield because its pretty small and doesn't come close to anything meltable. I think it sounds great and it gets loud enough for you to get a smirk on your face driving down the street, but stays quite enough to not bother the neighbors. It sounds extremely throaty (from behind) and people have asked me if I dropped a Hemi in my jeep. I have a 2012, and it honestly gives this engine the sound it deserves. And hey, the clearance on the exhaust is another great benefit.
jkmohican is offline   Quote Quick Reply
Old 08-06-2013, 10:42 AM   #4
Jeeper
 
DirtyTeddy's Avatar
 
Join Date: May 2013
Posts: 428
Quote:
Originally Posted by TRAUMAhead View Post
Been running for the past year, no problems (4 door).

3.8L, 35s, automatic, 5:38s. Drones like crazy below 1500 RPM while cruising, all other speeds there's no drone/minimal drone. Tone quieted down a lot after a year, thinking of switching exhaust.
Why are you thinking of switching?

Thanks for the input guys
__________________
RnR
DirtyTeddy is offline   Quote Quick Reply
Old 08-06-2013, 10:56 AM   #5
Jeeper
 
Kiddmen57's Avatar
 
Join Date: Mar 2013
Location: Tucson
Posts: 205
I bought it a few months back. Installed it then went on an 800 mile road trip with the family. The drone drove me crazy. had a local shop ad a pipe out to the rear corner, eliminated the drone, but still has a good note during accel or under a load.
__________________
2013 JKUR Billet
Kiddmen57 is offline   Quote Quick Reply
Old 08-06-2013, 12:48 PM   #6
Jeeper
 
DirtyTeddy's Avatar
 
Join Date: May 2013
Posts: 428
Quote:
Originally Posted by Kiddmen57 View Post
I bought it a few months back. Installed it then went on an 800 mile road trip with the family. The drone drove me crazy. had a local shop ad a pipe out to the rear corner, eliminated the drone, but still has a good note during accel or under a load.
That's a good idea, kind of sketchy dumping the exhaust under the jeep
__________________
RnR
DirtyTeddy is offline   Quote Quick Reply
Old 08-06-2013, 02:44 PM   #7
Jeeper
 
TRAUMAhead's Avatar
 
Join Date: Apr 2012
Location: Cen Cal
Posts: 627
Quote:
Originally Posted by DirtyTeddy View Post
Why are you thinking of switching?

Thanks for the input guys
Looking for a louder sound.

Quote:
Originally Posted by Kiddmen57 View Post
I bought it a few months back. Installed it then went on an 800 mile road trip with the family. The drone drove me crazy. had a local shop ad a pipe out to the rear corner, eliminated the drone, but still has a good note during accel or under a load.
How much was it to get the pipe added? I've also been thinking of getting the pipe added, Dynomax has the piece you can buy from their Rock Crawler version.

Quote:
Originally Posted by DirtyTeddy View Post
That's a good idea, kind of sketchy dumping the exhaust under the jeep
Same here, didn't read anyone having problems with it though. Driven with all configuratios, doors off/safari top, doors on/windows removed from soft top, etc.
TRAUMAhead is offline   Quote Quick Reply
Old 08-06-2013, 03:07 PM   #8
Jeeper
 
Join Date: Feb 2013
Posts: 1,932
Quote:
Originally Posted by TRAUMAhead View Post
Been running for the past year, no problems (4 door).

3.8L, 35s, automatic, 5:38s. Drones like crazy below 1500 RPM while cruising, all other speeds there's no drone/minimal drone. Tone quieted down a lot after a year, thinking of switching exhaust.

You've just lost some hearing, maybe even because of the muffler's drone. These are chambered mufflers... so basically tin cans... there is nothing inside them at all that can quiet down or 'break in'.
__________________
2013 Commando Green Freedom Edition JKU
2013 Billet Freedom Edition JK
legitposter is offline   Quote Quick Reply
Old 08-15-2013, 04:29 PM   #9
Jeeper
 
TRAUMAhead's Avatar
 
Join Date: Apr 2012
Location: Cen Cal
Posts: 627
Quote:
Originally Posted by legitposter View Post
You've just lost some hearing, maybe even because of the muffler's drone. These are chambered mufflers... so basically tin cans... there is nothing inside them at all that can quiet down or 'break in'.
Possibly. Too many out of town doorless trips without proper ear wear.

It might be just me, but the tone of the exhaust seems to change a bit through the day, sometimes its more throaty. Could a crack in the manifold cause a quieter exhaust?
TRAUMAhead is offline   Quote Quick Reply
Old 08-15-2013, 04:39 PM   #10
Jeeper
 
Crush21's Avatar
 
Join Date: Aug 2013
Posts: 346
How's the install on these?
Crush21 is offline   Quote Quick Reply
Old 08-15-2013, 04:50 PM   #11
Jeeper
 
TRAUMAhead's Avatar
 
Join Date: Apr 2012
Location: Cen Cal
Posts: 627
Had a shop install mine, got it welded on since they recommended it, after the fact I forgot you can return it if you don't like the sound. Only problem they ran into was you have to have another exhaust hanger installed.
TRAUMAhead is offline   Quote Quick Reply
Old 08-16-2013, 12:53 PM   #12
Jeeper
 
DirtyTeddy's Avatar
 
Join Date: May 2013
Posts: 428
Had mine welded in as well. Didn't like dumping the exhaust to the rear driver side door so I ran a pipe out the back. I like the growl but not too loud
__________________
RnR
DirtyTeddy is offline   Quote Quick Reply
Old 08-16-2013, 01:03 PM   #13
Jeeper
 
Ex Umbris Currus's Avatar
 
Join Date: Oct 2012
Posts: 261
I'm looking to put this exhaust in due to my rear track bar crushing the stock exhaust into the frame where it goes up and over the axle. Drone wouldn't bother me due to existing hearing loss and loud music.... What does concern me is exhaust coming in during long idle in the woods with no breeze while waiting for a line to open. Do any of you have this issue?
__________________
"I fear the man who drinks water and so remembers this morning what the rest of us said last night." Benjamin Franklin

"If you find yourself in a fair fight, your tactics suck." John Steinbeck
Ex Umbris Currus is offline   Quote Quick Reply
Old 08-16-2013, 01:06 PM   #14
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 212
Talking

Quote:
Originally Posted by TRAUMAhead View Post
Looking for a louder sound.

How much was it to get the pipe added? I've also been thinking of getting the pipe added, Dynomax has the piece you can buy from their Rock Crawler version.

Same here, didn't read anyone having problems with it though. Driven with all configuratios, doors off/safari top, doors on/windows removed from soft top, etc.
For a louder sound we make a 2.5" Race Bullet in different lengths that would work.




Quote:
Originally Posted by legitposter View Post
You've just lost some hearing, maybe even because of the muffler's drone. These are chambered mufflers... so basically tin cans... there is nothing inside them at all that can quiet down or 'break in'.
Our mufflers are a straight through design, our sister company makes chambered mufflers like the Thrush Welded muffler, chambered/baffled mufflers (in general are louder). Just wanted to clarify.

Quote:
Originally Posted by Crush21 View Post
How's the install on these?
The hardest part (honestly) is removing the stock system. I have had one of these installed in under 15 minutes on a lift.
__________________



www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 08-16-2013, 01:07 PM   #15
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 212
Quote:
Originally Posted by Ex Umbris Currus View Post
I'm looking to put this exhaust in due to my rear track bar crushing the stock exhaust into the frame where it goes up and over the axle. Drone wouldn't bother me due to existing hearing loss and loud music.... What does concern me is exhaust coming in during long idle in the woods with no breeze while waiting for a line to open. Do any of you have this issue?
If you are cruising along it shouldn't be an issue if you are truly idling for a while I would turn it off.
__________________



www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 08-16-2013, 02:29 PM   #16
Jeeper
 
Nickdoesabodygood's Avatar
 
Join Date: Jul 2013
Location: Lawrence
Posts: 214
DynoMax,
Are there any plans to make an Evo Comp exhaust that will fit the 12-14 2-door? Pretty please?
Nickdoesabodygood is offline   Quote Quick Reply
Old 08-16-2013, 02:39 PM   #17
Jeeper
 
DirtyTeddy's Avatar
 
Join Date: May 2013
Posts: 428
Quote:
Originally Posted by Ex Umbris Currus View Post
I'm looking to put this exhaust in due to my rear track bar crushing the stock exhaust into the frame where it goes up and over the axle. Drone wouldn't bother me due to existing hearing loss and loud music.... What does concern me is exhaust coming in during long idle in the woods with no breeze while waiting for a line to open. Do any of you have this issue?
Just add about 2 feet of piping after the cat back stock pipe and no worries
__________________
RnR
DirtyTeddy is offline   Quote Quick Reply
Old 08-16-2013, 02:44 PM   #18
Supporting Member

WF Supporting Member
 
wmwhitey's Avatar
 
Join Date: Mar 2012
Location: Ewa Beach Hawaii
Posts: 1,344



I personally love my evo exhaust but from this pic posted it looks like that exhaust is burning the paint off the body is that accurate?
wmwhitey is offline   Quote Quick Reply
Old 08-16-2013, 02:45 PM   #19
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 212
Talking

Quote:
Originally Posted by Nickdoesabodygood View Post
DynoMax,
Are there any plans to make an Evo Comp exhaust that will fit the 12-14 2-door? Pretty please?
This system can be modified with a small cut to the pipe to get the hangers lined up. It is about a 2.5" cut.
__________________



www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 08-16-2013, 02:47 PM   #20
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 212
Not that I am aware of. This was on a buddy's JK. He ran this muffler, the Ultra Flo Welded and the VT muffler. He didn't mention anything "burning" and he would have. I do not suggest the VT in fornt of the rear axle only in the stock location.

Quote:
Originally Posted by wmwhitey View Post



I personally love my evo exhaust but from this pic posted it looks like that exhaust is burning the paint off the body is that accurate?
__________________



www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 08-16-2013, 07:17 PM   #21
Jeeper
 
TRAUMAhead's Avatar
 
Join Date: Apr 2012
Location: Cen Cal
Posts: 627
Quote:
Originally Posted by DynoMax Exhaust View Post
For a louder sound we make a 2.5" Race Bullet in different lengths that would work.

So, where's that sound clip?

With the Evo Comp, I have a lot of drone cruising at 30-40 MPH and around 1500 rpm. Would adding the pipe that exits the rear like the Rock Crawler version cut any of the drone?
TRAUMAhead is offline   Quote Quick Reply
Old 08-16-2013, 08:36 PM   #22
Jeeper
 
DirtyTeddy's Avatar
 
Join Date: May 2013
Posts: 428
Quote:
Originally Posted by TRAUMAhead View Post
So, where's that sound clip?

With the Evo Comp, I have a lot of drone cruising at 30-40 MPH and around 1500 rpm. Would adding the pipe that exits the rear like the Rock Crawler version cut any of the drone?
No you still get drone. I like drone.
__________________
RnR
DirtyTeddy is offline   Quote Quick Reply
Old 08-16-2013, 08:45 PM   #23
Jeeper
 
TRAUMAhead's Avatar
 
Join Date: Apr 2012
Location: Cen Cal
Posts: 627
Quote:
Originally Posted by DirtyTeddy View Post
No you still get drone. I like drone.
TRAUMAhead is offline   Quote Quick Reply
Old 08-17-2013, 04:13 PM   #24
Jeeper
 
DirtyTeddy's Avatar
 
Join Date: May 2013
Posts: 428
No I really do like it, other people do too.
__________________
RnR
DirtyTeddy is offline   Quote Quick Reply
Old 10-03-2013, 03:01 PM   #25
Jeeper
 
Auckland's Avatar
 
Join Date: Apr 2013
Posts: 71
When doing a lift, I see you need an exhaust spacer put in. How does that work with this exhaust? Should I buy a spacer and install it at the same time? Or do I not need one at all? Would the spacer mess up the way it attaches to the hangers?
Auckland is offline   Quote Quick Reply
Old 10-03-2013, 03:09 PM   #26
Jeeper
 
Join Date: Sep 2013
Posts: 25

StangWrangler is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum 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 email address for yourself.
Email Address:

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.



Thread Tools

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 Off
Refbacks are Off




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 04:44 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC