E-Bodies.org Cuda Challenger Forum

Technical Shop => Exhaust => Topic started by: Mickm on May 07, 2018, 08:10:59 PM

Title: Getting rid of a drone in the exhaust....seeking input
Post by: Mickm on May 07, 2018, 08:10:59 PM
Hi Guys,
I have installed 2 1/4" aluminized pipe back to two stainless Magnaflow mufflers then over the axle to Cuda tips.
We installed a "H" pipe behind the Gearvendors overdrive at about 14" in front of the mufflers.

It sounds good at idle with a deep throaty sound. Problem is everything sounds good until I hit 2000 rpm's, then the drone is so back you can't hear yourself think.

I called Magnaflow and was told to put a 4.5" round x 20" resonator in front of the "H' pipe, which will put it under the seats.

I want a nice low rumble sound but I want it to be as quite in the cab as possible.

Does this sound normal or should I change mufflers?  Any advice will be appreciated.

Cheers!
Mickm
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: 1 Wild R/T on May 07, 2018, 09:09:32 PM
Put a pair of these behind the axle....

https://www.summitracing.com/parts/vpe-1792?seid=srese1&cm_mmc=pla-google-_-shopping-_-srese1-_-vibrant-performance&gclid=EAIaIQobChMImJnu2J712gIVgshkCh1zXQD1EAQYAyABEgI7IvD_BwE
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Chryco Psycho on May 07, 2018, 10:06:35 PM
 :iagree:, I would try that first , if you decide to change mufflers I would Dynomax super turbos or Hooker Aero chambers
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Mickm on May 08, 2018, 05:43:32 AM
1 Wild R/T and Chryco Psycho, thanks for the advice. I'll get a pair coming today and let you know how they work.

Cheers!
Mickm
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Mickm on May 08, 2018, 06:32:50 AM
One question guys before I order, will putting them behind the axle get rid of the drone noise in the cab? Magnaflow told me to put them in front of the H-pipe.
Just wanted to ask.

Cheer!
Mickm
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: 1 Wild R/T on May 08, 2018, 07:38:50 AM
Chrysler put resonators at the rear on Hemi's worked fine.... I've done resonators at the rear on a few cars, always worked... The drone comes out the back not through the pipe...
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: BIGSHCLUNK on May 08, 2018, 07:54:09 AM
I have the same issue with Miss NIKKI.... Love the rumble at the stop light... but at 70MPH the drone is a killer. I keep earplugs hangin' on the mirror!!   @blown motor (https://forum.e-bodies.org/mlist/blown-motor_52)  can verify!  :cooldance:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: blown motor on May 08, 2018, 09:41:44 AM
You know @BIGSHCLUNK (https://forum.e-bodies.org/mlist/bigshclunk_53) you can fix that if you take the Hemi out and put a 340 in.  :pokeeye:   :haha:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: BIGSHCLUNK on May 08, 2018, 10:19:12 AM
 :rofl:  :haha:  :rofl:  :haha:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: IRON MAN on May 08, 2018, 10:37:31 AM
x2 on the Aero Chamber mufflers. They produce a mellow rumble and no drone sound. Extremely well made but a little on the heavy side. Installed the 2-1/2" Aero Chamber mufflers on a 36 roadster with 302/headers/ AOD/9" four-link rearend/ out the back with 3" SS tips.
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Crash520 on May 08, 2018, 12:53:06 PM
I have the Magnaflow 2-1/2" system and added their 6"x6" race muffler either side of the gas tank, absolutely zero drone, sounds great, has a good rumble, barks a little on WOT but isn't at all obnoxious, love it
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Mickm on May 08, 2018, 02:11:03 PM
Thanks for the input  guys, it's greatly appreciated. I'm about to order them now.

blown motor.....My drone is in a 340  ;)

Cheers!
Mickm
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Chryco Psycho on May 08, 2018, 08:08:20 PM
Put a Hemi in then  :cooldance:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Mickm on May 08, 2018, 08:17:52 PM
Chryco Psycho, While I think that is a great idea, I am older and all about cruzing in comfort and getting affordable gas mileage. So the Hemi doesn't fit in my plans.
But for the record, I do love the hemi!!!

Cheers!
Mickm
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: BIGSHCLUNK on May 08, 2018, 09:47:43 PM
Hell. ol' BIGS is 63....  put a HEMI in it  :banana:           :banana: :haha: :haha: :haha: :haha:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Chryco Psycho on May 09, 2018, 07:38:39 PM
If you hve to live with the drone it might as well be a Hemi drone  :haha:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Mickm on May 11, 2018, 02:35:33 PM
UPDATE!!!!
I ordered the resonators 1 Wild R/T recommended and had them installed this morning.

The  sound coming out of the rear of the car is now deeper and more mellow and sounds really good!  I drove it 20 miles back home on the interstate at 75 and the drone appears to be gone. There is a, what I will refer to as a "Muscle car" exhaust sound all the time, which is a bit louder than it was before but again, it sounds good!

I am very pleased with the results and want to thank all those who chipped in with advice and ideas, especially 1 Wild R/T for the winning entry.

This is a prime example of what makes this a great site................great people willing to help another Mopar enthusiast.

Thank you one and all  :banana:

Cheers!
Mickm
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Chryco Psycho on May 11, 2018, 03:42:45 PM
 I am glad that created the needed difference !
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: 1 Wild R/T on May 11, 2018, 05:26:15 PM
Lucky Guess... :cheers:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Brads70 on May 11, 2018, 06:05:27 PM
Quote from: Mickm on May 11, 2018, 02:35:33 PM
UPDATE!!!!
I ordered the resonators 1 Wild R/T recommended and had them installed this morning.

The  sound coming out of the rear of the car is now deeper and more mellow and sounds really good!  I drove it 20 miles back home on the interstate at 75 and the drone appears to be gone. There is a, what I will refer to as a "Muscle car" exhaust sound all the time, which is a bit louder than it was before but again, it sounds good!

I am very pleased with the results and want to thank all those who chipped in with advice and ideas, especially 1 Wild R/T for the winning entry.

This is a prime example of what makes this a great site................great people willing to help another Mopar enthusiast.

Thank you one and all  :banana:

Cheers!
Mickm

Good to hear ( pardon the pun! LOL ) I've had those vibrant resonators for a few years now to put on. Still haven't got around to it though. Good to know they do the job!  :bradsthumb:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: BIGSHCLUNK on May 11, 2018, 08:25:19 PM
Hmmmmm another update......  :wrenching:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: Topcat on May 11, 2018, 08:50:54 PM
 
Quote from: Crash520 on May 08, 2018, 12:53:06 PM
I have the Magnaflow 2-1/2" system and added their 6"x6" race muffler either side of the gas tank, absolutely zero drone, sounds great, has a good rumble, barks a little on WOT but isn't at all obnoxious, love it

:iagree:   :slapme5:
Title: Re: Getting rid of a drone in the exhaust....seeking input
Post by: RUNCHARGER on May 11, 2018, 08:57:42 PM
Nice, and no resonators to drag.