[JuniorBimmer]

So as the title says.

2015 335xi Gt High Flow catted downpipe, Good Idea? 3' or 3'5? Are the catted pipes designed for F30's Compatible with the F34 GT's ?
Any recommendations or Useful tips for getting one for this specific car? , Known issues for installation?
this is my first serious mod to my car besides the Charges pipes.
The Whole plan is for a high flow catted down pipe, To lead into a stock res (3' i believe), Into a (maybe a valved) Vibrant AxelBack Setup.

What are you thoughts