[SSYCO]

Would a k&n replacement filter make any performance differences on a 2013 regal turbo?

 

[sonny615]

It would make a difference , but nothing that you would feel or really notice

 

[Captainjohn]

It made a noticeable difference in my 2.4. I've put K&N's in my cars for over 10 years, and have never been sorry.