Quote Originally Posted by tRipitaka View Post
If you get a JDM branded exhaust, you will need to change your cat to either a JDM cat or custom cat.
The header you can leave stock.

If you get a custom exhaust, you won't need to change your cat.
i was looking at replacing my stock audm dc2r cat back to fujitsubo rm01a; so i would need to change the cat to a a jdm one?? sorry it's a bit confusing