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Old 04-03-2013, 06:23 PM   #6
Scooby Guru
Member#: 4414
Join Date: Feb 2001
Location: Dublin, CA
2002 WRX Sedan
Midnight Black


3 port boost control requires significant tuning.

Alternately, you can use that 3 port as a 2 port via re-plumbing it and use the restrictor. This would give similar enough results to the stock for that Cobb tune to work for you.

Sounds like it's probably already tuned though if it had a 3 port... which means an off-the shelf tune might be worse.
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Concillian is offline   Reply With Quote