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Old 05-08-2019, 03:47 PM   #11
Scooby Specialist
Member#: 450808
Join Date: Jul 2016
Chapter/Region: SCIC
Location: Irvine
2017 WRX Premium
WR Blue Pearl


Originally Posted by OhThatHurt View Post
Anyone have first hand feedback about the Cobb SS vs Ti catback mated to a Cobb catted downpipe (or equivalent) on a 2015+ STi?

Unfortunately I do not know anyone in my area that has either, so I can't hear in person. My goal is slightly louder that stock and not excessive especially in the 2500-3500 RPM range.

I have reached out to Cobb and they say both catbacks are the same loudness, but the Ti version has a deeper tone. I would think they would have a different sound through the RPM range since they are made of different metals and one is resonated and the other is not.

I also read conflicting reports comparing Cobb to Q300 saying each is quieter that the other. I have listened to all the YouTube videos, but that is not the same as in person.
Q300 is definitely quieter than the Cobb. Q300 is probably the quietest aftermarket catback you can get. The Cobb and Grimmspeed would be a step above it in terms of loudness.

I am of course referring to the regular dual-piped, quad-tipped exhaust. I can't comment on the single-exit Q300.
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