Author Topic: Need to quiet this thing down. Suggestions?  (Read 725 times)

Offline sprecks

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Need to quiet this thing down. Suggestions?
« on: May 27, 2020 - 08:34:07 AM »
I must be getting old but the Challenger needs to be quieted down.  I currently run stock exhaust manifolds, full 3 inch TTI exhaust with X-pipe and Dynomax Super Turbo mufflers.  It is just too load for my liking.  After a cruise my ears ring for an hour. Any suggestions on quieter mufflers?  I am thinking about MagnaFlow mufflers but I'm not sure they will be any quieter than what I have now.  Thanks!!
you can call me Jay
I've seen sicker dogs get well.

1971 Challenger Vert - 472 Hemi EFI
2014 Challenger R/T Redline
2017 Ram Laramie 1500 - Hemi
2017 Chrysler 300C




Offline 70chall440

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Re: Need to quiet this thing down. Suggestions?
« Reply #1 on: May 27, 2020 - 02:38:51 PM »
I assume the mufflers are in the stock location? have you thought about adding resonators in the rear? I would reach out to Magniflow directly and talk to them about what you want, they do a huge amount of R&D and are pretty knowledgeable about this issue.
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline sprecks

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Re: Need to quiet this thing down. Suggestions?
« Reply #2 on: May 27, 2020 - 05:17:19 PM »
Yes the mufflers are in the stock location, resonators is a good suggestion. I'll give MagnaFlow a call to see what they have to say.  Thanks for the suggestions.
you can call me Jay
I've seen sicker dogs get well.

1971 Challenger Vert - 472 Hemi EFI
2014 Challenger R/T Redline
2017 Ram Laramie 1500 - Hemi
2017 Chrysler 300C

Offline 70chall440

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Re: Need to quiet this thing down. Suggestions?
« Reply #3 on: May 27, 2020 - 06:36:15 PM »
Welcome. Do you have any sound deadening in the car? Makes a HUGE difference.
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline sprecks

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Re: Need to quiet this thing down. Suggestions?
« Reply #4 on: May 27, 2020 - 07:44:30 PM »
I did line the floor with sound deadening.  I can't remember the brand but it was a rubbery product with a tin foil like backing.  The car is a convertible so that doesn't help matters I'm sure.  I know Mopar called them resonators but weren't they basically just a straight through muffler?
you can call me Jay
I've seen sicker dogs get well.

1971 Challenger Vert - 472 Hemi EFI
2014 Challenger R/T Redline
2017 Ram Laramie 1500 - Hemi
2017 Chrysler 300C

Offline 70chall440

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Re: Need to quiet this thing down. Suggestions?
« Reply #5 on: May 27, 2020 - 10:54:21 PM »
Sounds like dynamat but then all of them look pretty much the same (sound deadener).

Yes, the resonators were I believe to reduce some of the "boom" because it echos through the trunk. Many guys used to remove the mufflers and leave the resonators only, thats the way my 70 Challenger is (440 6 pack).
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline jimynick

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Re: Need to quiet this thing down. Suggestions?
« Reply #6 on: May 27, 2020 - 11:29:36 PM »
" Many guys used to remove the mufflers and leave the resonators only, "  While I didn't do it, the PO did and I like it quite well. FWIW  :cheers:

Offline sprecks

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you can call me Jay
I've seen sicker dogs get well.

1971 Challenger Vert - 472 Hemi EFI
2014 Challenger R/T Redline
2017 Ram Laramie 1500 - Hemi
2017 Chrysler 300C

Offline 70chall440

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Re: Need to quiet this thing down. Suggestions?
« Reply #8 on: May 30, 2020 - 11:41:06 PM »
That should work out well, should still sound "muscley" but not too loud.
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline jimynick

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Re: Need to quiet this thing down. Suggestions?
« Reply #9 on: May 31, 2020 - 11:37:54 PM »
Keep us posted on your results, would you please? I'd be interested in how they work out.  :cheers:

Offline sprecks

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Re: Need to quiet this thing down. Suggestions?
« Reply #10 on: June 06, 2020 - 09:28:42 PM »
I got the Dynomax Ultraflow mufflers installed in the resonator location beside the fuel tank. They tucked up in there real nice.  Made the difference I was looking for.  It still has a nice idle tone and going down the road is much improved.  I can actually hear the radio and talk to a passenger without having to raise my voice....lol.  Thanks for the input.
you can call me Jay
I've seen sicker dogs get well.

1971 Challenger Vert - 472 Hemi EFI
2014 Challenger R/T Redline
2017 Ram Laramie 1500 - Hemi
2017 Chrysler 300C

Offline 70chall440

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Re: Need to quiet this thing down. Suggestions?
« Reply #11 on: June 06, 2020 - 10:58:15 PM »
Excellent, glad it worked out for you, enjoy.
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)