I want a 2.5" catback for a 2.5i '07 Impreza. I was originally going to get a Blitz Nur Spec R exhaust, but I think these are 3", and I have heard that you don't want anything over 2.5" for NA engines. Can anyone recommend me a loud exhaust that gets the deep sound of the Blitz Nur Spec R?

 

you should get a STi catback and remove the resonator then go with borla headers

 

Alright, I'll look into it. I also kind of want something that doesn't really go for more than $500 used (I don't have that much money), and is easy to install.