Hey guys i thought i would post this for anyone that hates drone in there exhaust.

i just had a catback done on my truck and it sounds great except for the 1300 to 1700 rpm range it would drone pretty bad thats city cruising speed for me.

so i took it back to Muffler shop and had them install 2 branch resonators that are Adjustable from 24 inches to 38 inches it is set at 28 right now and the drone is gone.


all they did was cut hole into tail pipes right behind muffler and weld in pipe running back over muffler it works just need to tune it in to perfect length.


This is before branch resonators and a very cool day of 75f

http://www.youtube.com/watch?v=YgutV...SIjCzI7v2equg=


This is after branch resonators are on and its a very hot day 103f

http://www.youtube.com/watch?v=Q62x_...ature=youtu.be


As you can hear it is way more quiet in the cab

 

Not sure what year you have, but i simply left the stock resonator in place ahead of the muffler. Solves the drone and costs nothing in parts or labor.

 

I had my stock muffler cut out and an aftermarket put in its place. Opened it up nice and sounds alot better but i effin' HATE that droning!!!!!!!!!!!!!
(mine is 04')

 

^^^ And what after market muffler did you have welded up because that makes a lot of difference

 

bump added video

 

Franlofter, Sounds awesome. BTW 103 F in April! Whereabouts in Phoneix are u located? I live down in Maricopa. That was brutally hot for April.

 

I am in Surprise yeah tell me about it, first video was only 4 days before at 75f then we get hit with this heat in april and now we have 6 months of 100s plus to look forward to, gotta love az, must lose 25 hp in the summer here lol

 

Where is the muffler mounted at. Alot of times if you have a glasspack or muffler somewhere under the cab youll get that drone.

 

DId you have the stock muffler before this upgrade? If not, what were you running?

 

The muffler is way back under bed of truck, far from cab.

exhaust was stock before this.