Ok so I really need some advice. 2014 wrx hatchback. What I want is a catless invidia downpipe but I'm afraid it will be too loud and annoying since I drive in a lot of traffic. Is there that much of a difference in sound between the catted and catless downpipe? What do you guys suggest?
Get a Cobb or Invidia catted downpipe.
I like in Massachusetts, and my car will pass inspection.
Catless can lead to boost creep, and other issues.
I would only get a catless DP if I was going to use an external wastegate.