I found out what the vibration i was wondering about in my car was (https://honda-tech.com/zerothread?id=85168), and apparently the section from the manifold to the cat is rattling. Its a double walled pipe thats seperated so it causes the vibration thats been driving me nuts, but Acura wants a grand total of 700+ dollars for the pipe, flanges, gaskets, and install which seems completely off the wall to me.
Has anyone had this prob? I heard something about a flexable down pipe, or section(?), should i look into that? Otherwise, I think I'll just go to the muffler shop and get one fabricated for like 50 bucks or something, or wait it out until if and when i get a turbo.

 

ttt

 

why don't you just get a new header......generic ones out there, nice chrome finish for only 300 roughly.... or wait till you get your turbo