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Hey, Dynomax guy...

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Old 06-23-2015 | 07:03 PM
  #51  
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Originally Posted by tae73
I had the model that dumped out before the axle, it was a little loud for me with the hard top on. I bought the pipe that dumps it out past the axle, sound much better and quitter in the cab. This was on a 2 door.
I never had mine dump before the axle. I wanted it to go straight out the back from the start bc of my kid riding the back all the time. And mine's pretty loud. I love the sound. But I never "don't know" it's there.
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Old 06-23-2015 | 07:57 PM
  #52  
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Originally Posted by Its-a-JK
With all the talk about the pipes dumping before the rear, I thought exhuast pipes by Fed law required them to exhiast out past the rear passanger seat or at least out the sides of the vehicle, no?
Thats why mine is for off road use only. If you read the description of the product, it mentions for off road use only.
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Old 06-23-2015 | 08:28 PM
  #53  
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Heres some quick videos right after the install. Will try to get some better ones.



https://youtu.be/AEVk5skSYUA


https://youtu.be/xz5hoGHJqZw
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Old 06-24-2015 | 09:58 AM
  #54  
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Shouldn't be an issue. This is mounted to the similar layout as a 4 door.
Great pics.

Originally Posted by mhockey9090
Mounted the Evolution Competition on my 2 Door. It wasn't too bad of an install. I did have to cut the middle pipe down a bit. Only thing im concerned about is the heat next to the EVAP canister or whatever it is, what do you think? I also think I might cut down the exhaust tail pipe to give the hanger isolator a better fit.

Overall, it sounds a lot deeper and definitely gives a better throttle response. We will see what it sounds like after the break in period.

It can be a bit loud, but I just crank it up. Ha!

Originally Posted by tae73
I had the model that dumped out before the axle, it was a little loud for me with the hard top on. I bought the pipe that dumps it out past the axle, sound much better and quitter in the cab. This was on a 2 door.
No it is a state issue, a good site to see what is "legal" or not "legal" by state.


Many states want a muffler, some states want the exhaust to dump out back... but then there are some cars that dump out the side, so it gets murky.

Lift Laws | Suspension Lift Laws By State

Originally Posted by Its-a-JK
With all the talk about the pipes dumping before the rear, I thought exhuast pipes by Fed law required them to exhiast out past the rear passanger seat or at least out the sides of the vehicle, no?
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Old 06-24-2015 | 06:47 PM
  #55  
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Originally Posted by Dynomax
Shouldn't be an issue. This is mounted to the similar layout as a 4 door.
Great pics.


It can be a bit loud, but I just crank it up.

Awesome. Ill keep you updated, if i have any issues with that there. I had to grind out the EVAP skid plate a little to get the brack on there. Im used to loud. Had 37s on an F150 with a full exhaust, too include headers. The noise of the tires are music to my ears.
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Old 06-25-2015 | 08:29 AM
  #56  
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Then you are fine!!!

Originally Posted by mhockey9090
Awesome. Ill keep you updated, if i have any issues with that there. I had to grind out the EVAP skid plate a little to get the brack on there. Im used to loud. Had 37s on an F150 with a full exhaust, too include headers. The noise of the tires are music to my ears.
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Old 06-25-2015 | 08:42 AM
  #57  
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Originally Posted by Dynomax
Then you are fine!!!
For us 2 door guys on the evolution system which pipe has to be cut the stock pipe or the intermediate pipe in the kit? Which side does has to be cut? Sorry I don't have directions I'm converting from the rockkrawler set up
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Old 06-25-2015 | 09:31 AM
  #58  
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Originally Posted by Monte417
For us 2 door guys on the evolution system which pipe has to be cut the stock pipe or the intermediate pipe in the kit? Which side does has to be cut? Sorry I don't have directions I'm converting from the rockkrawler set up
Cut the intermediate. Resonator back goes. Just dont cut too much like I did.
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Old 06-25-2015 | 10:08 AM
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Originally Posted by Cutman
Cut the intermediate. Resonator back goes. Just dont cut too much like I did.
Thanks. Which side of the intermediate pipe? The side that goes into the muffler or the stock pipe?
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Old 06-25-2015 | 10:49 AM
  #60  
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Originally Posted by Monte417

Thanks. Which side of the intermediate pipe? The side that goes into the muffler or the stock pipe?
You want to re-use most of the intermediate pipe. (The pipe that goes from the y-pipe to the resonator). Cut as close to the resonator as you can. Measure like 8 times (as close as you can.) You will have to trim it again but leave as much there the first cut. Faux assemble it under the Jeep. Then take a little more off.

If you mess up, you can order a new intermediary pipe from the DIY kit. But they range from $40-80. And Autozone doesn't carry them. So you'll be without a muffler until it ships. If you're dumping before the axle you have more room to play. A straight pipe out the back requires it to be pretty precise. 3 parts have to all line up with their associated hangers. The hardest part was removing the old setup from the hangers. Wd40 and a prybar.
Last edited by Cutman; 06-25-2015 at 10:57 AM.
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