Dynomax ehaust question - 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 01-22-2014, 12:24 PM   #1
Jeeper
 
Join Date: Sep 2012
Location: Mechanicsville, VA
Posts: 146
Dynomax ehaust question

Looking to buy the Dynomax Cat Back system with the VT muffler for my '13 JK 2DR. I guess I'm looking at Dynomax part # 38515. Dynomax rep'. said that is the correct part #. Went to shopping on the Internet and found I can save almost $70 on Amazon. However, Amazon says it will not fit my '13. Has anyone bought this item from Amazon for a '13 2DR?

__________________
The bullets are for real. Vietnam # 10 G.I.
nmdesertrat is online now   Quote Quick Reply
Old 01-22-2014, 12:56 PM   #2
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 178
That is the correct P/N for a 2 door. Send/post the link and I will do my best to have Amazon change that.

__________________

www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 01-22-2014, 01:00 PM   #3
Jeeper
 
Nostromos's Avatar
 
Join Date: Jan 2014
Location: Parker, Colorado
Posts: 50
Newb question here, probably could find the answer if I dug more but I'm short on time. What are the benefits of changing the muffler (other then sound). Especially the splitbacks? Also, are they legal in Colorado? (damn emissions testing).
Nostromos is offline   Quote Quick Reply
Old 01-22-2014, 01:16 PM   #4
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 178
Quote:
Originally Posted by Nostromos View Post
Newb question here, probably could find the answer if I dug more but I'm short on time. What are the benefits of changing the muffler (other then sound). Especially the splitbacks? Also, are they legal in Colorado? (damn emissions testing).
A few reasons (IMO) to change out the stock to an aftermarket muffler.
The stock muffler is huge and bulky, so more of a rock magnet.
The stock muffler's internals are meant to be quiet so they are a bit restrictive.
If you want you can do a relocate. A lot of people will use a smaller muffler and install it in front of the rear axle. At this point you can do a turn down and let the system dump there (check with local laws some states require that the exhaust exits out back) or take it out the back and let it dump there.

Most of our systems we see nominal gains for both HP/TQ ( we have not dynoed the new 3.6 yet, FYI)

Now on the other hand, some people don't want to change out their stock muffler because there can be some drone with a lot of aftermarket mufflers. But for me it is no worse than the mud terrains or a soft top.

This system and all our systems are legal in all 50 states. (One system our Evolution Competition System that dumps before the rear axle may not be in some states; check with your local laws)
__________________

www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 01-22-2014, 01:24 PM   #5
Jeeper
 
Join Date: Jan 2013
Location: Houston
Posts: 37
Thumbs up

Buy, install, enjoy

I have a dualed out Dynomax on my 13JKU and was initially hesitant because I have always been a Flowmaster guy. The sound of the Dynomax exhaust opened up on a 3.6 is everything I was looking for. The loudness, pitch, lack of drone throughout the RPMs all are excellent. I receive regular comments about the sound. Many are surprised to learn that it is a Dynomax system. Several people in my area have purchased a Dynomax muffler for their Jeep after hearing mine.

I would not hesitate to recommend or purchase another system from Dynomax in the future.
Tagguy is offline   Quote Quick Reply
Old 01-22-2014, 01:31 PM   #6
Jeeper
 
Nostromos's Avatar
 
Join Date: Jan 2014
Location: Parker, Colorado
Posts: 50
Cool...thanks a lot for the info...good to know the details on this! So in terms of it being "restrictive"..does this mean a power loss ?
Nostromos is offline   Quote Quick Reply
Old 01-22-2014, 01:45 PM   #7
Jeeper
 
Join Date: Jan 2013
Location: Houston
Posts: 37
Thumbs up

Quote:
Originally Posted by Nostromos View Post
Cool...thanks a lot for the info...good to know the details on this! So in terms of it being "restrictive"..does this mean a power loss ?
Bingo

The factory system does rob a bit of potential power. Think of Dynomax and other less restrictive systems as freeing up what was already there.

I also highly recommend adding in a quality dry cold air and throttlebody spacer. The combination of all of those really woke my JKU up. Sure I can feel a little more power but more than that those three things make the engine feel like it doesn't have to work as hard. Which is a good thing since I jumped up to 37s lol
Tagguy is offline   Quote Quick Reply
Old 01-22-2014, 01:50 PM   #8
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 178
Quote:
Originally Posted by Tagguy View Post
Buy, install, enjoy

I have a dualed out Dynomax on my 13JKU and was initially hesitant because I have always been a Flowmaster guy. The sound of the Dynomax exhaust opened up on a 3.6 is everything I was looking for. The loudness, pitch, lack of drone throughout the RPMs all are excellent. I receive regular comments about the sound. Many are surprised to learn that it is a Dynomax system. Several people in my area have purchased a Dynomax muffler for their Jeep after hearing mine.

I would not hesitate to recommend or purchase another system from Dynomax in the future.
Nice!!!
One thing to keep in mind with us is our guarantee.

Performance & Sound Guarantee

We challenge you to try our DynoMax® performance mufflers* risk-free for 90 days - if our products* don't meet the challenge, call us for your money back.



Quote:
Originally Posted by Nostromos View Post
Cool...thanks a lot for the info...good to know the details on this! So in terms of it being "restrictive"..does this mean a power loss ?
Yes it does. On the systems we dynoed we saw consistent gains through out the power band.
__________________

www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 01-22-2014, 02:07 PM   #9
Jeeper
 
Join Date: Sep 2012
Location: Mechanicsville, VA
Posts: 146
Quote:
Originally Posted by DynoMax Exhaust View Post
That is the correct P/N for a 2 door. Send/post the link and I will do my best to have Amazon change that.

Sorry, I don't know how to do that.
__________________
The bullets are for real. Vietnam # 10 G.I.
nmdesertrat is online now   Quote Quick Reply
Old 01-22-2014, 02:10 PM   #10
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 178
Quote:
Originally Posted by nmdesertrat View Post
Sorry, I don't know how to do that.
No worries at all!!
__________________

www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 01-22-2014, 02:17 PM   #11
Jeeper
 
Nostromos's Avatar
 
Join Date: Jan 2014
Location: Parker, Colorado
Posts: 50
Next question...Dynomax exhausts...are they bolt-on's? or is it a weld-on system?
Nostromos is offline   Quote Quick Reply
Old 01-22-2014, 02:24 PM   #12
Supporting Member

WF Supporting Member
 
lee indy's Avatar
 
Join Date: May 2009
Location: Middle Georgia
Posts: 5,207
Systems will be bolt on. if you buy just the muffler and do the rest yourself some welding may be required
__________________



LeeIndy's Build Thread
lee indy is offline   Quote Quick Reply
Old 01-22-2014, 02:36 PM   #13
Jeeper
 
Join Date: Jan 2013
Location: Houston
Posts: 37
They are bolt on but of course you can always weld.

Mine required minor modifications. I had to extend the exhaust tips further outward towards the sides of my Jeep. This was due to the bumper I chose to use having shackles located infront of the exhaust tips. A few bucks and a few minutes at my favorite muffler shop and he had them moved over about 2 inches. Looks perfect now and still sounds great.

The location of the tips normally is a great spot I just had to make things difficult with a weird bumper.
Tagguy is offline   Quote Quick Reply
Old 01-22-2014, 02:38 PM   #14
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 178
Ha!
The toughest part of installing a exhaust system (in general) is removing the old system. Use a lot of PB blaster on the bolts and the hangers.


Quote:
Originally Posted by Tagguy View Post
They are bolt on but of course you can always weld.

Mine required minor modifications. I had to extend the exhaust tips further outward towards the sides of my Jeep. This was due to the bumper I chose to use having shackles located infront of the exhaust tips. A few bucks and a few minutes at my favorite muffler shop and he had them moved over about 2 inches. Looks perfect now and still sounds great.

The location of the tips normally is a great spot I just had to make things difficult with a weird bumper.
__________________

www.dynomax.com
DynoMax Exhaust is offline   Quote Quick Reply
Old 01-22-2014, 05:38 PM   #15
Jeeper
 
Join Date: Sep 2012
Location: Mechanicsville, VA
Posts: 146
Great. Well, it's on it's way. Hope it's not too loud. Don't expect any drone so I should be happy. Finally, I'll be able to release the family of hummingbirds that were living in my exhaust. They were getting awfully tired of beating their little wings when I pressed on the skinny pedal!!
__________________
The bullets are for real. Vietnam # 10 G.I.
nmdesertrat is online now   Quote Quick Reply
Old 01-22-2014, 08:48 PM   #16
Jeeper
 
Join Date: Dec 2012
Posts: 24
I have the VT kit (pipes + exhaust + exhaust tip) on my 2013 JKUR which I bought from Amazon drop shipped from Dynomax warehouse. I had it installed and the muffler had a weird exhaust note fluctuation at about 2800 RPM when going 65-75 mph. I called them immediately and they shipped out a new one within 5 days. I was a little nervous that the replacement muffler would give the same problem, but too my surprise, it was perfect. It has a nice throaty note when you rev it stationary and it really comes alive on acceleration. When you drive modest its quiet (about 30% louder than the OEM). When wide open throttle in auto stick manual mode, OH MY GOODNESS, its insanely exciting. Sounds like a Hemi and when you rev to almost redline and auto stick shift to second gear it growls (literally) like the Audi RS5 does between shifts. () (12th second into video) I LOVE IT. I drive hard everyday all day, but if you drive like Granny, it will behave very nice. Crusing on the highway, its quiet with No droning at any RPM just like the OEM muffler. Again about 30% louder than OEM. If you floor it at 65mph on cruise it gets happy and throaty all over again. Going uphill or any minor incline will make it sound louder because its open the valve. Had to get use to that, but its not the end of the world or annoying. Just dont let granny in the jeep for a ride that day. My exhaust has changed color a bit from the silver to a darker silver/brown. I am assuming its the heat since the pipe from the engine is straight through with no mid muffler to quiet it and dirt from off roading here in New England probably burned on the outside. Now I wish I could mod it to have two VT mufflers at the back of the jeep! That would probably sound amazing. I am going to spray paint my muffler and pipe with high heat matte paint for ascetics.

Lastly, I raced a 2013 JKUR from 0-60 and pulled away by 6 car lengths in a quarter mile, so I would say it gave the jeep maybe 10hp. The throttle response to acceleration is about 50% better. The key is that it really moves air through the exhaust. The sound of rushing air out the exhaust tip is audible even from the drivers seat at 5500 RPM. It sound life the wind if you roll your window down. The OEM muffler at that RPM, you don't hear a thing. Boring

Hope this review helped with your decision.
jk4life is offline   Quote Quick Reply
Old 01-23-2014, 02:20 PM   #17
Jeeper
 
Join Date: Jan 2013
Location: Houston
Posts: 37
Talking

Haha I too very much enjoy the sound it produces above the economy band.

More than one person has asked if I did a V8 swap after hearing me leave somewhere at a "spirited" pace.
Tagguy is offline   Quote Quick Reply
Old 01-23-2014, 02:32 PM   #18
Jeeper
 
Nostromos's Avatar
 
Join Date: Jan 2014
Location: Parker, Colorado
Posts: 50
Heres a question for you other folks out there (Dynomax, feel free to chime up too!).

What difference should I see in Dynomax vs Flowmaster vs Magnaflow vs Gibson (other then cost)?
__________________

2009 "Crusher" JK Sport
4" Rancho Lift | 33" BFG TA/KO tires | Black Rhino Rims | Freedom Hardtop/Bestop Trek Top
Nostromos is offline   Quote Quick Reply
Old 01-23-2014, 03:51 PM   #19
Sponsoring Vendor
 
DynoMax Exhaust's Avatar
 
Join Date: Sep 2012
Posts: 178
Wink

Quote:
Originally Posted by Nostromos View Post
Heres a question for you other folks out there (Dynomax, feel free to chime up too!).

What difference should I see in Dynomax vs Flowmaster vs Magnaflow vs Gibson (other then cost)?
There are a lot of differences in design. Some will be chambered which tend to make more noise and small gains. Some use CRF (continuous roving fiber AKA fiber glass to absorb exhaust gases) Some are a straight through design. Some are aluminizied construction, which keep the cost down but if you are in the "rust belt" won't last as long. There are also different types of stainless steel used too.

I always suggest a stainless steel construction for a long life.
Also what is the warranty on their product?
To me these are the biggest factors stainless steel construction and warranty/guarantee.

__________________

www.dynomax.com
DynoMax Exhaust 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 03:33 PM.



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