I recently purchased a 2021 Durango R/T and was interested in a mid muffler delete. I contacted a local shop owned by someone I knew and trusted. I talked to the mechanic and he asked me if I had the “kit”. Do I need to replace it with a “straight pipe”? I’m so confused. All the YouTube videos I watched didn’t say anything about a kit. I figured they removed something, car got louder, and that’s that. What am I missing? What do I need?
Bigibillz10
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I recently purchased a 2021 Durango R/T and was interested in a mid muffler delete. I contacted a local shop owned by someone I knew and trusted. I talked to the mechanic and he asked me if I had the “kit”. Do I need to replace it with a “straight pipe”? I’m so confused. All the YouTube videos I watched didn’t say anything about a kit. I figured they removed something, car got louder, and that’s that. What am I missing? What do I need?
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You have a couple options. Have the shop cut the mid muffler out and replace it with pipe (there are kits with pre bent pipes, maybe that's what the shop was asking about) or you could have them put different mufflers in. I had it done on my 06 Magnum and the shop bent and installed pipes right there.
1949 International KB2, 302/T5
1968 Dodge Dart GTS, 340/727
2006 Dodge Magnum R/T "SRT Design"
2016 Dodge Durango Limited
1949 International KB2, 302/T5
1968 Dodge Dart GTS, 340/727
2006 Dodge Magnum R/T "SRT Design"
2016 Dodge Durango Limited
I've never seen a kit for it but any muffler guy can weld up an x-pipe, an h-pipe, straight pipes or install other mufflers.
There are plenty of premade exhaust portions including x-pipes, h-pipes, mufflers if you search around the web. He should be more specific about what he means by kit. Is he talking about a full cat back? You should talk to him again and try to be more speciffic too, about what you want him to do. Maybe its just a misunderstanding or maybe they don't do exhaust fabrication.
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536 Posts
To make it sound better. There's no performance gain from just taking out the muffler. It makes the car louder, but not obnoxiously loud. It's also a lot cheaper than buying a complete exhaust, in my case it cost $100.
1949 International KB2, 302/T5
1968 Dodge Dart GTS, 340/727
2006 Dodge Magnum R/T "SRT Design"
2016 Dodge Durango Limited
Thanks. For some reason I thought there was a (slight) gain in performance with a less-restricted exhaust flow. Isn't that why muscle cars went to dual exhausts? Or maybe not...
The cheaper route on an exhaust system replacement also makes sense, but since the OP has a 2021, and they're looking to make a modification, I didn't think that was the issue here.
The cheaper route on an exhaust system replacement also makes sense, but since the OP has a 2021, and they're looking to make a modification, I didn't think that was the issue here.
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536 Posts
Going from a single to dual exhaust will definitely make a difference. The Hemi already has dual exhaust, and so taking the muffler out makes little difference other than sound. Cost may or not be an issue, it's just an observation I made.
1949 International KB2, 302/T5
1968 Dodge Dart GTS, 340/727
2006 Dodge Magnum R/T "SRT Design"
2016 Dodge Durango Limited
It can be a performance gain when you start to free up more power through more air flow. Free flowing intake, headers, free flow cats (or cat delete) and an upgraded tune means more fuel use especially at WOT. The more efficiently the exhaust travels especially at high rpms, the freer the engine will run.
The mid suitcase pipe entrance is only 2 inches on the r/t. Both Kooks and American racing headers (the two most common Durango headers) use 3 in mid pipes. You can see where there can be some restriction in flow. I used ARH 3in cat back, which actually changes to 2.5 in at the small mufflers that sit under the rear differential/axels. Borlas and Corsas use 2.5 inch pipe all the way back past the mid pipes, which is more than enough for most. I'm doing a midrange cam on top of what I've already done, so I'm just trying to get the most out it I can when its done.
Not saying there are huge increases in HP with an exhaust change like a mid muffler delete. But it's about progression, everything added working together as a whole to squeeze out potential.
The mid suitcase pipe entrance is only 2 inches on the r/t. Both Kooks and American racing headers (the two most common Durango headers) use 3 in mid pipes. You can see where there can be some restriction in flow. I used ARH 3in cat back, which actually changes to 2.5 in at the small mufflers that sit under the rear differential/axels. Borlas and Corsas use 2.5 inch pipe all the way back past the mid pipes, which is more than enough for most. I'm doing a midrange cam on top of what I've already done, so I'm just trying to get the most out it I can when its done.
Not saying there are huge increases in HP with an exhaust change like a mid muffler delete. But it's about progression, everything added working together as a whole to squeeze out potential.
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When your start talking the whole modification package, absolutely you'll gain power, but not by just removing the muffler.
1949 International KB2, 302/T5
1968 Dodge Dart GTS, 340/727
2006 Dodge Magnum R/T "SRT Design"
2016 Dodge Durango Limited
I’m wanting to do the mid muffler delete. Not for any power gains but for sound.
I also don’t want to loose any power or torque from doing so. I’ve read a little about exhaust scavenging but am by no means an expert.
If you are going to delete the mid muffler on our Durangos is it best to put a X-Pipe, H-Pipe, or straight through in the mufflers place? Or does it even matter which?
I also don’t want to loose any power or torque from doing so. I’ve read a little about exhaust scavenging but am by no means an expert.
If you are going to delete the mid muffler on our Durangos is it best to put a X-Pipe, H-Pipe, or straight through in the mufflers place? Or does it even matter which?
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536 Posts
As mentioned above, removing just the muffler will not give any noticable increase or decrease in power on it's own. Difference in sound, sure. If you're doing other mods at the same time, or have plans to, that's different.
1949 International KB2, 302/T5
1968 Dodge Dart GTS, 340/727
2006 Dodge Magnum R/T "SRT Design"
2016 Dodge Durango Limited
When you say add headers. Are you talking about just adding headers by themselves on a stock exhaust.
or Adding headers after doing a mid muffler delete?
So you’re saying if you add headers you’ll loose torque.
What do you also have to do in combination with headers to add torque?
After I installed the 6.4 intake manifold it felt to me like I got that little bit of the low end pull back. Subtle difference but I drove it enough before the 6.4 swap to notice. This is stop and go city type driving I'm talking about. That's all that was changed wasnt even tuned again, other than WOT settings.
I just bought 2015 DD RT. Wanted a little more sound. Cut mid muffler out. Straight piped back to factory exhaust, kept rear resonators. Sounds great. Minimal noise inside. Loud at cold idle but tames down after idle down.
Has anyone put a 2.5 inch dual in dual out flowmaster muffler in place of the suitcase and done a rear mufflers delete. If so how did it sound and what series did u go with? I’m thinking of 10 series or the cherry bomb extreme muffler. Thank you in advance for the feedback.
Google is your friend for that. It's too specific a customization and I don't recall anyone doing just that. What are you trying to achieve? Options used by forum members are Corsa catback for the lead, Borla catback, Mopar Performance catback, full take-off SRT exhaust, SRT resonators on stock exhaust, other random resonators used on stock, lots of suitcase deletes with a variety of resonators and even a couple of everything deletes.
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