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Old 01-05-2011, 01:56 AM   #1
Scooby Newbie
Member#: 224904
Join Date: Sep 2009
Chapter/Region: E. Canada
Location: North York, Ontario, Canada
1990 Legacy

Default 1990 Legacy RS Type RA Downpipe question

I was wondering if anyone could answer a question for me. Im pretty sure the GC8 downpipe is different from the Legacy one...but what is the difference...is it just length? if so...are there any manufacturers that make a catted downpipe for leggy turbos?
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Old 01-05-2011, 12:37 PM   #2
loose Subie
Scooby Newbie
Member#: 262067
Join Date: Oct 2010

Do you have air care in your area? Either way just get a shop to build you one with a cat, or relocate it further down under the car. I've got a similar car we built the downpipe exhaust in a few hours, an hour of that was spent on the milling machine opening up the turbo to exhaust flange.
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Old 01-05-2011, 01:26 PM   #3
Scooby Guru
Member#: 4800
Join Date: Mar 2001
Chapter/Region: TXIC
Location: Houston, Tx
1990 Legacy & 97 OBS


The Impreza down pipe is shorter than the Legacy one and needs to be extended at the lower piping.

Most setups will have the cat in the horizontal piping and not in the down pipe.
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Old 01-05-2011, 07:47 PM   #4
Scooby Specialist
Member#: 53144
Join Date: Jan 2004
Chapter/Region: NWIC
Location: PDX'ish
oem- jdm 94 BC5
97 2.5gt daily wagon


a wrx catted DP bolts on fine. just have to do some mid pipe fabbing to mate it up to whatever exhaust you're runnin.

p.s. car pics please if you have an rs
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