DynoMax 2012-Up JK Evolution Competition Exhaust System Installation Write-Up

Great write up, got me through my install yesterday. The stock exhaust hangers are a pain on the ass. I recommend greasing the shit out of them. WD40 was just not enough on mine. Sounds amazing, really gives the Jeep life.
 
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Forgive my seemingly endless ignorance but does installing this also change the exhaust enough to resolve the DS issues with a lift on a '12 or '13 JKU or would exhaust spacers still be advised?
 
HoosierWolf said:
Forgive my seemingly endless ignorance but does installing this also change the exhaust enough to resolve the DS issues with a lift on a '12 or '13 JKU or would exhaust spacers still be advised?
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No need to apologize for your question, it's a good one and the answer to it is no. If you have a 2012 or newer, this kit will not address your front drive shaft making contact with the "exhaust cross over" when lifted and/or when running shocks that are too long. For this, Dynomax does make a different kit to address it and that's what you would want.
 
Just to add a note, if you have a 2012+ and use the aFe "Y" pipe and have a double cardan driveshaft, you need to wrap the "Y" pipe so the heat won't melt the grease out of your u-joints. Been there and done that.
 
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It works for the '13 model but I question the step to cut off 2.5" from the intermediate pipe. I did and the front seam on the muffler sits roughly 1/8" from the cross-member and at certain resonance I can hear it rubbing. I went ahead and ordered a new intermediate pipe and will check it's fitment before cutting this time. I am curious if Eddie cut the one on the Rubicat as it sits aft of the offending cross-member and the aft hanger sits differently than it does on my rig. Overall love the system though just a little install kink that could just be installer error, just means I get to tinker more :D.

For reference the front seam on my muffler is sitting where Eddie's finger is in Pic 15.

Here is a couple pics of how close it is on my install, new pipe should be here Monday.
DSC00826.jpgDSC00827.jpg
 
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Honestly, what you see in my write-up is all that I did - need I say, I didn't cut the exhaust.
 
NFRs2000NYC said:
Is there any drone when cruising?
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StrizzyChris said:
YUP! Only time you wont hear this exhaust is when you completely let off the gas pedel and coast. Other than that, it always is making a humming noise. I havent decided if I like or hate it yet :thinking:
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Depends if you mean drone in a negative way. Is is louder than stock? Yes. But you took out the resonator and replace the muffler. I happen to like it. It is a little raspy when cold, but the stock set up was raspy when cold too.

If you are sensitive to loud exhaust you should probably skip the mod. I was beating the crap out of my stock muffler and this solution is great!
 
I use my rig as a daily and also transport my daughter in it. I don't mind a hum, but a constant annoying pitch would be tiresome. I have a dynomax VT currently and while it does indeed have 0 drone on the highway (drone is not a hum) I don't care for the sound and haven't been too happy with it. The quality is also pretty poor but I guess that's the game. I guess I was used to all the parts on my sports cars which had far superior quality and construction. Maybe I need to spend a little more money but I would love to get a quality exhaust that has a nice tone which is louder than stock but doesn't drone on the highway.
 
NFRs2000NYC said:
I use my rig as a daily and also transport my daughter in it. I don't mind a hum, but a constant annoying pitch would be tiresome. I have a dynomax VT currently and while it does indeed have 0 drone on the highway (drone is not a hum) I don't care for the sound and haven't been too happy with it. The quality is also pretty poor but I guess that's the game. I guess I was used to all the parts on my sports cars which had far superior quality and construction. Maybe I need to spend a little more money but I would love to get a quality exhaust that has a nice tone which is louder than stock but doesn't drone on the highway.
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My kids haven't complained. But then again, they just like riding in the jeep. :thumb:
 
My girlfriend falls asleep now every time we drive for more than 10 minutes...its like taking an infant for a ride! I guess the drone works :idontknow:
 
StrizzyChris said:
My girlfriend falls asleep now every time we drive for more than 10 minutes...its like taking an infant for a ride! I guess the drone works :idontknow:
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if we are driving for more than ten minutes, my girlfriend aint sleeping....lol i make sure she is a busy little bee:brows:
 
So I have couple questions about this system... I have heard that it is not recommended for a 2 Door? That it would cause problems of some sort. How many of you are running this on a 2 door rig, and were and are there any complications you have found with it running it over time and with the install? Or if you know of a similar system that works with the 2 door that would be cool too.

:beer: Cheers
 
NAUJK said:
So I have couple questions about this system... I have heard that it is not recommended for a 2 Door? That it would cause problems of some sort. How many of you are running this on a 2 door rig, and were and are there any complications you have found with it running it over time and with the install? Or if you know of a similar system that works with the 2 door that would be cool too.

:beer: Cheers
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There was some discussion on this not being compatible with mounting it on a 2d. It was due to the website info being incorrect, but dynomax made a comment that this will work just fine on a 2door. Was that the "problems" were you told about?

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