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I have the Cobb Ti catback on my19. Only put 100 miles on it though so far, but cold starts are loud. My neighbors are complaining about it when I leave at 8am. Once the system warms up, it mellows down. I'm in the SF bay area, and I haven't seen any other STI run it around here. For a catback it sounds amazing, but in Cali it might get the CHP to notice you. ($1100 ticket for modified exhaust) I will say though, It's over 95db when cold, and around 85db when warmed up. Ti takes time to warm up, so keep that in mind. It DOES HAVE LESS DRONE THAN THE STOCK EXHAUST!
Video in my post was a warm start after I already took it for a drive. You will still be noticeable when it's warmed up though.
Stock my19 STI Cobb Titanium exhaust
Video in my post was a warm start after I already took it for a drive. You will still be noticeable when it's warmed up though.
Stock my19 STI Cobb Titanium exhaust