TRD catback drone?

Anyone know how to get rid of the highway speed drone that's deafening on long road trips? (oem TRD catback)



I heard the trick is to buy a

$112 Vibrant 1141 2.5' Ultra Quiet Resonator, Silver

Vibrant 1141 resonator and then take it to an exhaust shop to weld it in
Though I'm not 100% sure if the resonator is meant to address rasp, or drone

 

Mine doesn’t drone. Check your donut gasket and make sure it’s not leaking. If all is good you could add a resonator. Unless you have an aftermarket y pipe.

 

I have one on mine, and it does not drone. I could just be used to it as I have had tuner cars for the last few vehicles I have owned...

 

This. Take a look at the donut. Mine doesn't drone either.

 

Shouldn't be leaking, have checked before and installed a new one with the exhaust
but will get under to take a look to be sure
maybe will look for signs of leaking (black residue) or spray with soapy water after turning the engine on to check for bubbles
I heard it helps to plug the tailpipe a bit with a rag temporarily while doing that, to create pressure that pushes the bubbles to air up/be visible

though I did not replace any exhaust hardware besides the donut
for example Toyota says to measure/check the bolts and spring washers that hold it together, claiming they can wear out and need replacement to apply proper tension to squeeze the donut gasket tight

Maybe I'm not sure if it's just perception
Never had a tuner car before and this is my first catback
Not as loud as friends' tuner cars but those were much closer (if not actually) straight-piped

No Y-pipe, just went with a used catback since it was cheap
I heard the more parts you upgrade, the louder it gets
(catback, y-pipe, supercharger whine, etc.)
Unless a y-pipe is worth it for some more power

just was not sure if a resonator is the right part to improve drone

 

Same mines been great no drone - factory hardware but new gasket

 

I've got a drone at like 70ish mph (2000-2500 rpm) but I've just gotten used to it. It may help to just change your speed by a couple mph and keep the engine out of the rpm range that the exhaust resonates the most. Wind noise, tire noise, and exhaust drone have all become a regular part of driving for me.

 

I'm guessing this is happening over a narrow RPM range. Some people may never experience it because they don't normally operate their truck in a range that produces it, but you clearly do.

You have two options:

1. Modify your truck or your driving habits to stay out of that RPM range. Modifying your driving habits may not be safe, and modifying your truck would involve changing your final drive ratio (through some combination of different tire sizes and gearing) enough to keep you out of that range. Not cheap.
2. Muffle the sound more

I think you are on the right track; adding or replacing the muffler with something that will quiet things down more should help. Unfortunately, it is hard to tell how much will be enough, so you'll have to experiment unless someone has had the exact same problem, and was able to solve it with a specific part.