Hey guys, normally im good at figuring this stuff out but I really have no idea what this could be.

I swapped out my M2 Y pipe for an JIC Y pipe today, that's all i did, and after the install i noticed a weird grinding/buzzing sound coming from underneath my feet. Doesn't sound anything engine related because it doesnt happen all the time. Just when turning left or right, and accelerating in first gear. Nothing after that.

The only thing I can think of is my ART pipes might be hitting that heat sheild screw that hangs down. I forgot to trim it when I installed my art pipes. Does anyone have an idea of what that grinding/buzzing sound could be? It's pretty loud and you can actually feel it in your feet and in the floorboard.

Let me know what you guys think?