JK exhaust
JK Enthusiast
Joined: Jul 2012
Posts: 374
Likes: 0
From: Sunrise, Florida
Dynomax.. What's the biggest difference between the EVO and the Rock Crawler?? I just purchased the EVO because I saw and heard it on project JK and it was awesome. But what's the advantage of the Rock Crawler? I'm not doing any rock crawling just moderate mud and trails. Is the EVO fine for that? Thanks
Sponsoring Manufacturer
Joined: Jun 2010
Posts: 892
Likes: 2
Dynomax.. What's the biggest difference between the EVO and the Rock Crawler?? I just purchased the EVO because I saw and heard it on project JK and it was awesome. But what's the advantage of the Rock Crawler? I'm not doing any rock crawling just moderate mud and trails. Is the EVO fine for that? Thanks
On the Evolution Competition System in front of the rear axle.
On the "rock crawler" system the exhaust tubing will snake through the rear and dump out on the driver side.
Both systems use the same muffler, our polished SS Ultra Flo Welded.
Either system would be a good fit for your application.
JK Enthusiast
Joined: Jul 2012
Posts: 374
Likes: 0
From: Sunrise, Florida
The biggest is difference is where the exhaust dumps.
On the Evolution Competition System in front of the rear axle.
On the "rock crawler" system the exhaust tubing will snake through the rear and dump out on the driver side.
Both systems use the same muffler, our polished SS Ultra Flo Welded.
Either system would be a good fit for your application.
On the Evolution Competition System in front of the rear axle.
On the "rock crawler" system the exhaust tubing will snake through the rear and dump out on the driver side.
Both systems use the same muffler, our polished SS Ultra Flo Welded.
Either system would be a good fit for your application.
JK Newbie
Joined: Dec 2011
Posts: 42
Likes: 0
From: West Palm Beach, FL
Just wanted to add my 2c here. I got and installed the Dynomax VT system on my 2012 JKU a couple months ago now. Sound is great when you get on it and accelerate. There really is no droan at all when cruising which is great! I think I lost about 1 MPG, but this may be due to me stomping on the skinny pedal more off the line to hear the noise. :-). Overall happy so far. My Jeep certainly sounds more like it should now. Hopefully the MPG will go back up to its prior crapy level sometime if I can lay off the gas.
Sponsoring Manufacturer
Joined: Jun 2010
Posts: 892
Likes: 2
It's a nice feeling to have a great sounding system AND no drone!
Just wanted to add my 2c here. I got and installed the Dynomax VT system on my 2012 JKU a couple months ago now. Sound is great when you get on it and accelerate. There really is no droan at all when cruising which is great! I think I lost about 1 MPG, but this may be due to me stomping on the skinny pedal more off the line to hear the noise. :-). Overall happy so far. My Jeep certainly sounds more like it should now. Hopefully the MPG will go back up to its prior crapy level sometime if I can lay off the gas.
Sponsoring Manufacturer
Joined: Jun 2010
Posts: 892
Likes: 2
I was told that they would be produced this week (on the 4th, today!).
So hopefully they start shipping out this week.
Edited out END from week. Should go out this week.
So hopefully they start shipping out this week.
Edited out END from week. Should go out this week.
Last edited by Dynomax; Sep 4, 2012 at 07:31 AM.
JK Enthusiast
Joined: Sep 2010
Posts: 300
Likes: 0
From: Commerce MI
No Drone dynomax rock crawler system with ripp long tube headers
I installed the dynomax rockcrawler system last year and it has no drone at all, I was sencitive to drone from running a gibson dual muffler cat back that was awfull.
I just installed Ripp headers with tuner and wow, growels like a hot rod and runs even better, with the high flow cats it is louder, I have a hushpower resonator that Ripp says is needed with any system due to the headers and hi flow cats.
The problem with the gibson I believe is that thay have no actual packing in the muffler body
I just installed Ripp headers with tuner and wow, growels like a hot rod and runs even better, with the high flow cats it is louder, I have a hushpower resonator that Ripp says is needed with any system due to the headers and hi flow cats.
The problem with the gibson I believe is that thay have no actual packing in the muffler body
Sponsoring Manufacturer
Joined: Jun 2010
Posts: 892
Likes: 2
That is good to know!!!
I installed the dynomax rockcrawler system last year and it has no drone at all, I was sencitive to drone from running a gibson dual muffler cat back that was awfull.
I just installed Ripp headers with tuner and wow, growels like a hot rod and runs even better, with the high flow cats it is louder, I have a hushpower resonator that Ripp says is needed with any system due to the headers and hi flow cats.
The problem with the gibson I believe is that thay have no actual packing in the muffler body
I just installed Ripp headers with tuner and wow, growels like a hot rod and runs even better, with the high flow cats it is louder, I have a hushpower resonator that Ripp says is needed with any system due to the headers and hi flow cats.
The problem with the gibson I believe is that thay have no actual packing in the muffler body