So I'm switching my exhaust from a catted x pipe to an off road h pipe. I have the stock manifolds and I will be running flow masters. The car was sorta loud before but usually only when I got on it. Is my car going to be extremely loud to where it pisses off my neighbors or is it just going to be a little louder. I would appreciate anyone's knowledge on this question.

 

It's the jba off road h pipe paired with flowmasters on an 04 gt if that wasn't clear

 

Its going to be louder but I suspect you won't know if it irritates the neighbors until you install it. There are multiple YouTube.com clips with your combination to view/hear.