Thread: Exhaust Leak
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Old 12-05-2019, 02:13 PM   #15
Scooby Newbie
Member#: 487057
Join Date: Jun 2018
Chapter/Region: BAIC
Location: California
2002 WRX Wagon


Originally Posted by siickwrx View Post
I actually have that adapter. Does the cobb catback have a 3" flange or 2.5"?
When I had my Cobb catback, 2.5, it used the stock donut gasket.

As for torque sequence, start at the front and work your way back. Dp to midpipe first. Then midpipe to axle back. That should minimize possibilities for leaks. It should also make it apparent if you need different length hangers in different spots to get everything lined up right.
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