I have a new STI and was thinking about changing the exhaust, it's a bit quiet.

It's only a couple of months old so still in warranty so I'm reluctant to have the car remapped and risk issues with warranty later.

Would a cat-back exhaust require the car to be remapped?

 

A couple of years old, but will soon be out of warrantee?

 

Its April 2017 but a 2014+ model.

 

ah, I see...


I cant imagine that an aftermarket cat back only would make much difference, and I certainly don't think it would make it over-boost, but wouldn't this change alone risk the warrantee?




I was in your camp a few years ago with sinister views, but it doesn't help answer the question. I'm in a stock 2.5 FWIW!