Yeah the feel/sound of it seems like it's the v-band from downpipe to the rest of the exhaust. When I think back to when I tightened that v-band, pretty sure it was misaligned.
Also, the gasket that used to be in it is gone... lol. In fact I'm almost certain that's what this is. I removed the gasket completely after seeing that it deteriorated. Surfaces are uneven, probably clamped wrong too. I'll sand both surfaces smooth and copper spray and re-connect it.. til I get a new gasket maybe.
And yeah, at least it does drive. Going to Midas ASAP to have my exhaust tweaked a bit to reduce stress on the system. (Adding exhaust hanger in one spot, and adding more pipe to eliminate rearward pull on my downpipe)
do you still have that curvy dual out mounted sideways? that looked like it would be super inefficient over just piping it strait back.
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3rd alero- 02 GX 2.2 5sp coupe. drove for 3 years 55,000 miles. Sold for a kids first car, and missed
01 Intrigue GX
2016 Chevy SS, Jet Black