Awful Drone! Borla Type S. What did I do wrong?

CptMorgan said:

Just talked to Borla Tech. Very helpfull.

Two things to check when I'm home:
1) Muffler internal damage. Ensure the muffler sounds solid when taped and not hollow or empty sounding.

2) Change the intake back to stock. He's fairly sure this is the problem. Reports of certain intakes resonating with the exhaust.

Now I need to go find the old OEM intake in the attic...

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csirnak said:

Interesting timing on this thread.

I JUST installed a Borla 40349 muffler with my stock exhaust, removed resonator, and boom Terrible drone. Your quote here sums it up:

"We’re not talking a nice barking exhaust note, or a loose exhaust rattle sound. My cab has become a resonating chamber."

After 45 minutes of highway, I had a horrible headache and ringing in my ears yesterday. I can't see putting the resonator back on being that much help.

It is louder in the cab than out. Exhaust isn't even loud from the outside, but it does have a nice tone. I'm thinking about swapping the whole thing out for a Corsa Extreme system. I had Corsa on the old Escalade and it sounded great with zero drone.

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ARH1956 said:

I have the same muffler. 1. Installed first with resonator, sounded almost stock., 2. Removed factory resonator, drone was bad., 3. Had muffler shop install Helmholtz Resonator "J-Pipe" ahead of muffler sounds perfect and Zero drone. I used a 2.5"x26" pipe on my SCREW exhaust and welded it in about where the factory resonator was with it running parallel to the factory 3" pipe.

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