Quick cheap fix for exhaust system drone noise 

Just wanted to add my experience. I was a certified Vibration analyst for NASA. On of the issues discovered about vibration or "Drone" was that it is all about "Frequency Resonance". Where did the Frequency/Drone occur? Without any testing or frequency readings on your vehicle, "Just add Mass". Example - find some lead sheeting or heavier sheet metal and wrap it around the muffler and secure. By adding enough "Mass" to the muffler it will change the frequency of the vibration inside the muffler, thus moving the frequency to another level. It might take some playing with the amount of mass but it worked on many of the vibration frequencies" affecting critical NASA equipment. Just food for thought.

Thank you for putting together this video! I too am looking for a more cost effective approach versus having someone weld additional pipes in, etc. Love this!

What will fix the drone completly is removing the stock engine and installing a 454LSX.

I wrapped my sport mufflers on my Porsche. There pretty thin metal, and I wanted to deaden the raspy noise, however the wrap stinks bad. I agree with the Nasa guy about adding sheets of thicker metal.

I discovered this when i wrapped an expansion pipe on a 2 stroke exhaust. It SIGNIFICANTLY reduced noise on that application.

Would have been nice if you produced a before and after video so we could hear the difference. But thanks for the idea.

I've done this , its good for about 20dB. most sports mufflers have this inside the muffler chamber.

Is a wrap completely safe under extreme heat? Would it not burn or anything

😱The secret is out👍👍😎 Wrapping the exhaust pipe often helps also. Use aircraft stainless steel safety wire .032 diameter. 👍👍😎😁

This is a really solid idea man.

What wrap did you use?. Do think any wrap would work? Thanks

I was wondering it just welding rod chucks across the middle of the resonators would add mass and kill the vibrations. Audi s4guys know this pain all too well.

Really you fix all drone sounds?

I just tried this on a 2012 Yukon Denali with 6.2 and a single Gibson exhaust. sorry but it did not work, everything sounded much deeper in bass (not just the 2k-2.5k drone) but from idle on up to 3k. I am going to remove it and go for a different muffler.

I have to try this, i have 5,7 Jeep Grand Cherokee with magnaflow and drone from this muffler is blowing my head off.

Nice thanks for the test drive

I'm getting ready to do this today. I bought a cheap catback for my Subaru and the muffler material is too thin and has no support inside so at certain rpms the sound waves cause the entire muffler to ring out like a bell. If I put my hand on it the ringing goes away like you'd expect. It sounds really good until the drone kicks in.

Hey man what material did you use, was it fibreglass?

Would this work on pipe instead of muffler?

Did you do any before and after vids?

I did this on my bmw Z3 drone at 3000rpm (100hz) it does not work ! I will install a helmholtz resonator

Resonantors

Do you still have your muffler wrapped and are you still happy with the results? I'm running a Borla muffler on my truck and it has some moderate drone to it around 1400 RPM's and am really interested in your idea.