Exhaust tips and drone

icetraxx · Sep 5, 2017

Can/does changing out exhaust tip change the tone of the exhaust? I had the magnaflow 18" installed on my truck over the weekend and I have a drone around 1500 Rpm's. Any ideas on how to lessen the drone?

Mbrigh3 · Sep 5, 2017

I get it to with my Carven. When I am on the highways I just drop her into 7th and the drone is gone. That has been my fix. I just went on a 5 hour trip with the ram this recent weekend.

I learned real quick that the drone would have driven me nuts if I was not able to downshift into 7th and cruise. If I was not able to do that I would have probably taken the muffler off.

Pull Ya · Sep 5, 2017

Installing a 5" tip will not eliminate the drone however it will make tone a lot lower and deeper.
Jay

icetraxx · Sep 5, 2017

I might have to look into the 5" tips. I've been debating on getting some black ones anyway since they are the only exterior chrome I have one the truck. I installed some aluminum shielded sound foam underneath the truck and between the heat shield and exhaust. It helped some. I might do the same on the interior. I have a hard tri-fold cover and no bed liner that is not helping things. I might have to spring for a rubber spray in liner

Pull Ya · Sep 5, 2017

I have a bed rug and a hard fiberglass tonneau cover and 5" tips with a 22" Magnaflow and still get some drone.
Jay

Casper · Sep 6, 2017

icetraxx said:
Can/does changing out exhaust tip change the tone of the exhaust? I had the magnaflow 18" installed on my truck over the weekend and I have a drone around 1500 Rpm's. Any ideas on how to lessen the drone?

I'm sorry to hear about your troubles.

Tips do change the exhaust note, but will not fix drone--that's a harmonic in the muffler, tailpipe and resonators.

In general (that's a simplification for the RF Trolls), the shorter or louder the muffler, the more likely you are to have drone.

That's not always the case, but I hear a lot of complaints from folks with 14" and 18" or shorter mufflers, and not nearly as many complaints from folks with 22" and longer mufflers--even those that are chambered.

1,500-1,800 RPM is about where my 24" gets nice and mellow.

Firebird · Sep 6, 2017

Mufflex makes a "J" pipe to help eliminate drone

SoCal Bomber · Sep 6, 2017

Can you please explain the J pipe, is it a bolt on? Is it before or after my carven? And a silly question, do use the stock flared clamps or weld in?

Casper · Sep 7, 2017

SoCal Bomber said:
Can you please explain the J pipe, is it a bolt on? Is it before or after my carven? And a silly question, do use the stock flared clamps or weld in?

The J pipe is actually Helmholtz resonator or oscillator that when placed in line with the drone source cancels (attenuates anyway) the annoying sound waves.

The “J” pipe, traps a sound wave that usually goes into the muffler in a chamber where it self-cancels, causing reduced cabin noise without increasing exhaust restriction or diminishing tailpipe tone.

Science:
https://en.wikibooks.org/wiki/Engin...control_with_self-tuning_Helmholtz_resonators

Mufflex sells for Ram 1500 at about $175:
https://www.mufflex-performance.com/dodge-ram-1500-2009-to-present/97-j-pipe-noise-eliminator.html

SoCal Bomber · Sep 8, 2017

Does anyone have pics of the J pipe installed?

Exhaust tips and drone

icetraxx

Senior Member

Mbrigh3

IG: Stormtrooper_5.7

Pull Ya

U.S. MARINE VETERAN

icetraxx

Senior Member

Pull Ya

U.S. MARINE VETERAN

Casper

U.S. Navy (Ret.)

Firebird

Senior Member

SoCal Bomber

Senior Member

Casper

U.S. Navy (Ret.)

SoCal Bomber

Senior Member

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