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Old 09-14-2015, 05:17 PM
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Dynomax Catback exhaust

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Old 04-14-2011, 09:52 PM
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Originally Posted by shooter5635
How does it sound on the expressway? Drone? Annoying?

I've got a cherry bomb now but starting end of summer I'm going to be taking a 6 hour ride down to SIU for school, so the cherrybomb will be coming off...
If you come through tuscola give me honk.

I really want to order this. i have a jerry rigged thrush turbo dumped before the axle that is getting annoying..
Old 04-15-2011, 08:15 PM
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Originally Posted by XxXJ99xX
Heres a few pics. Still sounds good after a year of having it on there, pretty tough to.
What tip is that?
Old 04-15-2011, 08:35 PM
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Originally Posted by The Rooster
What tip is that?
No clue, It was on the kit when I bought it
Old 04-16-2011, 08:53 AM
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It's a stainless steel tip welded to the tail pipe. Installed mine 2 weeks ago and the sound has settled in to a nice rumble, slightly louder than stock but not annoying by any means. This was a nice upgrade and couldn't beat the price....
Old 04-16-2011, 11:12 AM
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put mine on last august and i actually did gain 1-2 mpg, but i also replaced my worn out factory cat with a magnaflow. things were awesome till my manifold cracked. once i put my new apn manifold on this weekend, i'm hoping i get that back. the exhaust is pretty tough, i took a rear end shot from a kid this fall in a little kia. it was enough to bend my bumper and dent my back hatch...he did scuff my stainless tip though

on the downside, they were offereing the rebate last year and i sent in everthing with the copy of the reciept from summit and never got mine. probably a fluke since most of the other guys i talked to got theirs.
Old 05-14-2011, 10:44 AM
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can i fit the 87-92 catback onto my 97 xj with no problems? really just wondering if it's bent the same and if the hangers line up correctly.
Old 05-16-2011, 12:02 PM
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No one knows?

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Old 05-16-2011, 12:30 PM
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Just did the upgrade this weekend. Its a great fit and has a nice non ricer sound to it. Not loud by any means but it was well worth it!!
Old 05-16-2011, 12:30 PM
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Originally Posted by DualSportDad
can i fit the 87-92 catback onto my 97 xj with no problems? really just wondering if it's bent the same and if the hangers line up correctly.
Go back to the original post. There are 2 links posted. The first is for 87-92 and the 2nd is 93-'01. Apparently there IS a difference.
Old 05-16-2011, 12:45 PM
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Yeah one has a chrome tip and a attachment in the box for a newer cat. The older exhaust has a 2.5 inch inlet instead of 2.25. If I can save $40 and not have a stainless tip I'd rather do that.

Edit: i found the answers i needed. the newer one has the flange in the box for the newer xj's. the pipe on the older one is bigger, the bends are the same, the hanger is the same except for the rear one. i guess the older cherokee's use a clamp on hanger type while the newer ones use a piece of metal rod welded to the pipe that slides through a rubber block type mount bolted to the frame. i don't know what i'll do there but i'm sure i can fab something up cheap.

i ended up getting the exhaust from streetsideauto for $93 shipped using a $10 off code "quick10".

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Last edited by DualSportDad; 05-16-2011 at 11:35 PM.
Old 06-03-2011, 07:56 PM
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I know this thread is a little old but I ordered my Dynomax exhaust about 2 weeks ago and had my friend install it for me.

The system sounds great and I love it. I paid 160 after shipping from Summit Racing and then sent in my 75 dollar mail in rebate.

I'm very satisfied with this purchase. I would recommend it to anyone looking to replace the factory exhaust.

Last edited by Bustedknuckle; 06-03-2011 at 08:04 PM.
Old 06-03-2011, 09:24 PM
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Put this on my 93 last week. Didnt get the tipped one....wish I had, had to modify the pipe a little to get it right. Love the sound, but then I've had Dynomax on just about everything I drive(being as I work at NAPA and get a good discount)
Old 06-05-2011, 08:58 PM
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I ended up fitting the older exhaust to my 97 and it fit right up...just had to half *** Fab up a rear mount. The older exhaust is cheaper, has bigger pipe and I think the tip looks better compared to the stainless one.

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Old 06-06-2011, 12:09 AM
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so bummed i payed like 150 for mine -____-
but i like it, i have the dyno max cat back on my 2000 and i got the flange adapter, its a joke that they dont supply nuts for the flange though, obviously the other ones are going to be rusted on and have to be broken off. it was almost impossible finding the nuts that fit and i had to get extremely lucky finding the nut size on a random review from amazon.com. i think its like a metric 10.5 or something like that. besides the nuts it was pretty easy to install, i just cut off that old stuff and bolted up the new, if you use the clamps make sure to re tighten them after a few days. im pretty satisfied with the results, loud enough for a little difference but not nearly as loud as most. small gains on acceleration but little or no change in mpg.
Old 06-06-2011, 12:21 AM
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Can any of you guys that have this exhaust post some pictures? I would like to get one for my '91 but not sure whether I would want the one with the stainless tip or the standard one.


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