Subaru WRX Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
1 Posts
The catalytic converter is in the downpipe. Catback means "back from the catalytic converter." There is no cat behind the downpipe, so it's irrelevant to catback exhaust systems. Use of a catted downpipe will negate the issue of boost creep.
And any aftermarket downpipe will require a new ECU map or "tune." My WRX is tuned by Ron Watson (Phatbotti) with a catted downpipe. No one is better than Ron when it comes to tuning. I've used several others over the last 15 years, but Ron is the best I've experienced.
 

·
WRXpert
Joined
·
1,811 Posts
EyeBuck is correct. The Catalytic Converter is located in the J Pipe. I opted for a Catted J Pipe and Resonated Mid Pipe for My17 build.
 
1 - 3 of 3 Posts
Top