My muffler started making a buzzing sound slowly over time and now happens at higher RPMs. I took it to a shop and they said i have a small leak at the donut gasket and at the head. I ran up on some debri on the highway and nailed the header so I already purchased a new one. Could this cause the buzzing sound out of the back?? I can't find a leak in the back either but it could be small....The muffler is a borla universal and is about a year old. Could the muffler be blown out?? If I need to replace it I want to take it to a custom exhaust shop to get some mandrel bent tubing.

Any input is appreciated

thanks

 

what kind of cat, high flow or stock

 

Donut gasket is where the different sections of your exhaust come together. Where the flanges are. Theres one right after the rear wheel, and one on either side of the cat. If your replacing, make sure to get a set of bolts as they break easily.

AcuraOEMparts.com -- $4.10 -- "Exhaust Gasket"