Dynomax Muffler Delete with Magnaflow Muffler Install

greatpunkn

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Been following the forum for awhile and recently picked up my 2020 Willys Sport. One of the first mods I did was exhaust just to ensure it all came apart easy. Originally went with just a Dynomax Muffler delete. Like others, I did cut out a 3/8 inch notch for the centering stud on the original exhaust connection. A Dremel with a cutting disk made quick work of that.

029CB2BB-F054-4157-A18E-AB82E6DC75AA.jpeg


Threw it all together and torqued the provided clamp down to 35 foot pounds, just to experience a significant exhaust leak. Tried adjusting the pipe and clamp multiples times with no success. Drove it around for a while to see if I liked the sound, and thought if I like it I’ll just go have the local shop weld it up. My opinion was cruising is fine, but acceleration was a tad loud for me. I pondered the possibility of adding a muffler somewhere upstream.

So I headed to the local AutoZone and found a 4” round Magnaflow muffler (Part# 10416). This is a 2.5” IN/OUT diameter muffler so it would fit the pipe fine and the 20” length was just perfect to fit between the axle and factory resonator. I then headed to the local muffler shop to have everything welded up:

9DD8DFF5-5152-4478-8D92-7C8E014C8C59.jpeg

E341B375-3658-45A7-AEB8-25B5769535E7.jpeg


Overall, really happy with how everything came out. The tone is a rumble on acceleration and near stock cruising. I think this is how it should have been from factory. All of the parts and welding ran me about $250. Hope this helps anyone looking for the high clearance muffler delete but wants a more mellow sound.





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ThirtyOne

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Thanks! Been looking at some other options but just added this to the list.
 

blnewt

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Been following the forum for awhile and recently picked up my 2020 Willys Sport. One of the first mods I did was exhaust just to ensure it all came apart easy. Originally went with just a Dynomax Muffler delete. Like others, I did cut out a 3/8 inch notch for the centering stud on the original exhaust connection. A Dremel with a cutting disk made quick work of that.

Threw it all together and torqued the provided clamp down to 35 foot pounds, just to experience a significant exhaust leak. Tried adjusting the pipe and clamp multiples times with no success. Drove it around for a while to see if I liked the sound and thought if I like it I’ll just go have the local shop weld it up. My opinion was cruising is fine but acceleration was a tad loud for me. I pondered the possibility of adding a muffler somewhere upstream.

So I headed to the local AutoZone and found a 4” round Magnaflow muffle (Part# 10416). This is a 2.5” diameter muffler so it would fit the pipe fine and the 20” length was just perfect to fit between the axle and factory resonator. I then headed to the local muffler shop to have everything welded up:

Overall, really happy with how everything came out. The tone is a rumble on acceleration and near stock cruising. I think this is how it should have been from factory. All of the parts and welding ran me about $250. Hope this helps anyone looking for the high clearance muffler delete but wants a more mellow sound.
Wow, such a clean install, still keeps the Dynomax intact and looks like you have adequate room surrounding that new MagnaFlow section. Definitely something I'll look into, although I'm pretty happy w/ the overall tone of my Dynomax, but a little refinement isn't a bad thing.
Nice work, thanks for the detailed write-up!
 

ChattVol

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Been following the forum for awhile and recently picked up my 2020 Willys Sport. One of the first mods I did was exhaust just to ensure it all came apart easy. Originally went with just a Dynomax Muffler delete. Like others, I did cut out a 3/8 inch notch for the centering stud on the original exhaust connection. A Dremel with a cutting disk made quick work of that.

029CB2BB-F054-4157-A18E-AB82E6DC75AA.jpeg


Threw it all together and torqued the provided clamp down to 35 foot pounds, just to experience a significant exhaust leak. Tried adjusting the pipe and clamp multiples times with no success. Drove it around for a while to see if I liked the sound, and thought if I like it I’ll just go have the local shop weld it up. My opinion was cruising is fine, but acceleration was a tad loud for me. I pondered the possibility of adding a muffler somewhere upstream.

So I headed to the local AutoZone and found a 4” round Magnaflow muffler (Part# 10416). This is a 2.5” IN/OUT diameter muffler so it would fit the pipe fine and the 20” length was just perfect to fit between the axle and factory resonator. I then headed to the local muffler shop to have everything welded up:

9DD8DFF5-5152-4478-8D92-7C8E014C8C59.jpeg

E341B375-3658-45A7-AEB8-25B5769535E7.jpeg


Overall, really happy with how everything came out. The tone is a rumble on acceleration and near stock cruising. I think this is how it should have been from factory. All of the parts and welding ran me about $250. Hope this helps anyone looking for the high clearance muffler delete but wants a more mellow sound.
Thanks...will you post a video so we can hear it?
 

CWOFOR

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Nice little custom exhaust mod, Punkn. Thanks for choosing MagnaFlow!
Maybe you folks at MF can come up with a, "reasonably" priced , bolt in version. I would buy one.
 

MaggieJeep

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Been following the forum for awhile and recently picked up my 2020 Willys Sport. One of the first mods I did was exhaust just to ensure it all came apart easy. Originally went with just a Dynomax Muffler delete. Like others, I did cut out a 3/8 inch notch for the centering stud on the original exhaust connection. A Dremel with a cutting disk made quick work of that.

029CB2BB-F054-4157-A18E-AB82E6DC75AA.jpeg


Threw it all together and torqued the provided clamp down to 35 foot pounds, just to experience a significant exhaust leak. Tried adjusting the pipe and clamp multiples times with no success. Drove it around for a while to see if I liked the sound, and thought if I like it I’ll just go have the local shop weld it up. My opinion was cruising is fine, but acceleration was a tad loud for me. I pondered the possibility of adding a muffler somewhere upstream.

So I headed to the local AutoZone and found a 4” round Magnaflow muffler (Part# 10416). This is a 2.5” IN/OUT diameter muffler so it would fit the pipe fine and the 20” length was just perfect to fit between the axle and factory resonator. I then headed to the local muffler shop to have everything welded up:

9DD8DFF5-5152-4478-8D92-7C8E014C8C59.jpeg

E341B375-3658-45A7-AEB8-25B5769535E7.jpeg


Overall, really happy with how everything came out. The tone is a rumble on acceleration and near stock cruising. I think this is how it should have been from factory. All of the parts and welding ran me about $250. Hope this helps anyone looking for the high clearance muffler delete but wants a more mellow sound.
You Reckon you could give us a sound clip? My dynomax is droning alittle and I feel like if my dog sits at the back, it'll be bad for him over time...
 

JeepSmash

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Does it drone under load? The dynoMax delete is pretty brutal going up hills. Anything around 2100-2700Rpm is drone like crazy.
 

PsychoTrucker81

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Sound clip please?! Did the muffler delete with a Pypes axle back...sounds great, but just not like a Jeep should. Sounds more like a G37 or similar.
 

jabtyler

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I was thinking about doing the same thing. thanks for finding the part number for me.
 

ArkieJeep

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Been following the forum for awhile and recently picked up my 2020 Willys Sport. One of the first mods I did was exhaust just to ensure it all came apart easy. Originally went with just a Dynomax Muffler delete. Like others, I did cut out a 3/8 inch notch for the centering stud on the original exhaust connection. A Dremel with a cutting disk made quick work of that.

029CB2BB-F054-4157-A18E-AB82E6DC75AA.jpeg


Threw it all together and torqued the provided clamp down to 35 foot pounds, just to experience a significant exhaust leak. Tried adjusting the pipe and clamp multiples times with no success. Drove it around for a while to see if I liked the sound, and thought if I like it I’ll just go have the local shop weld it up. My opinion was cruising is fine, but acceleration was a tad loud for me. I pondered the possibility of adding a muffler somewhere upstream.

So I headed to the local AutoZone and found a 4” round Magnaflow muffler (Part# 10416). This is a 2.5” IN/OUT diameter muffler so it would fit the pipe fine and the 20” length was just perfect to fit between the axle and factory resonator. I then headed to the local muffler shop to have everything welded up:

9DD8DFF5-5152-4478-8D92-7C8E014C8C59.jpeg

E341B375-3658-45A7-AEB8-25B5769535E7.jpeg


Overall, really happy with how everything came out. The tone is a rumble on acceleration and near stock cruising. I think this is how it should have been from factory. All of the parts and welding ran me about $250. Hope this helps anyone looking for the high clearance muffler delete but wants a more mellow sound.

Just added the magnaflow muffler and it made a substantial improvement in the drone from the dynomax delete kit. Still has a nice low rumble <2krpm but drone is essentially gone at higher rpms. My wife and kids are thanking me.
 

JeepSmash

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Just added the magnaflow muffler and it made a substantial improvement in the drone from the dynomax delete kit. Still has a nice low rumble <2krpm but drone is essentially gone at higher rpms. My wife and kids are thanking me.
I went with the slightly larger oval muffler in the same position. Soooooo much better now. Zero drone. Only a touch louder than stock.

the delete only was awful. Brain numbing drone going up hills
 

jlewissystem

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Has anyone posted a video of the sound output? I’m getting so sick of my delete. Need to add something.
 

BCool

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Has anyone posted a video of the sound output? I’m getting so sick of my delete. Need to add something.
I don't have a video, but I am selling a Flowmaster version of this pipe if you're interested!
 

jlewissystem

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I don't have a video, but I am selling a Flowmaster version of this pipe if you're interested!
I'm starting to latch-on to the SAVVY axle-back, so in a holding pattern for the minute. Thanks though!
 

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