"...in every gear at around 3100 to 3600 RPMs it makes the worst mettalic rattle sound."

That happened to me before at exactly 3500rpm. It was the A-pipe. Depending on your milage, your warranty should still cover it.. even though you have some mods. Acura hooked me up and saved me $400+... those koo bastards! :thumbup:

lates :fawk: