Got rid of mine a while ago. Tried different mufflers, resonators, loosen this, tighten that, new gaskets blah blah... Threw a bunch of time and money at the thing and the best solution was simply to ditch it and build my own 3 exhaust.
I don't miss the change in performance or the horrible...
Here's a sound clip of my recently modified version.
1st run - mic in the bed
2nd & 3rd runs - from side of open road
whine is from supercharger
https://www.youtube.com/watch?v=gF-RbY3awZQ&feature=youtu.be
Put a couple more miles on it today. The rasp and hiss have definitely subsided substantially. The exhaust sound has gotten a bit louder, and more trumpet-like.
It sounds better the harder you drive. Cruising drone is no more an issue than before. There is some resonance left but significantly...
I tried the new muffler today and was much happier with the sound. It is the Magnaflow 14719.
The new muffler hasn't eliminated the rasp completely. It just sounds way better so the rasp is less noticeable.
Typical Gadget response. If one of my suggestions doesn't fix it, it's your fault. I've sold a hundred and you're the only one complaining..... etc...
I had JBA long tubes, custom y-pipe and a Magnaflow cat back with a Vibrant resonator which was the single best Tacoma exhaust I had ever...
The resonating is part of it. I'm getting a really loud and unpleasant metallic hissing sound.
I have a different muffler on order which I'm hoping will help. I've gone back and tightened all the connections, including the header brackets and checked for leaks multiple times.
Just installed my URD spec-U exhaust today and I am also getting a hideous rasp anytime I'm on the gas.
Mine's not rubbing on anything, I'm using new URD gaskets etc... The Magnaflow exhaust I had before had no issues...