Do they remove catalytic converter if u get a invida n1 catback?
 

Do they remove the catalytic converter?

No, it is a "cat-back" so it will bolt up to the OEM front pipe. The front pipe houses the secondary cat on these cars.

No. The last cat in the system is on the front pipe. The N1 replaces everything after the front pipe to the tips.

I'm also getting a front pipe resonated

If you are getting a resonated front pipe, then you WILL be getting rid of one of your cats.

Tell me... why must you post the same thread/topic in all different sections of the forum?

http://www.ft86club.com/forums/showthread.php?t=52414

It's pretty much every other thread you start. You ask a question and then start a new one within minutes, either in the same subforum or other section.

We want to help, but you also need to learn to post once and wait for a reply...

-alex