I'm getting noise from my exhaust. I included some pics. It's coming out the hole in the pipe that joins to the catalytic converter. The hole is perfectly round so it doesn't seem like it's worn through (though of course maybe it is). Any ideas on what's causing the noise? The noise is typical muffler noise, you hit the gas and it gets louder.
Thanks
hole:
looking up into hole:
top of pipe:
top of pipe looking at cat:
Thanks
hole:
looking up into hole:
top of pipe:
top of pipe looking at cat: