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Our Subaru WRX STi Spec C Decat Downpipe replaces the standard restrictive downpipe and catalytic converter with a stainless steel, 3" one-piece item. Increasing the bore of the downpipe and replacing the restrictive catalytic converter allows the exhaust gasses to flow much more freely, increasing the power output of the engine.
This downpipe has been specifically designed for the twin scroll turbo setup
Features:
Manufactured from T304 stainless steel
3" bore
Twin scroll
TIG welded, CNC machined flanges
Boss fitted to accept O2 (lambda) sensors
Subaru Impreza GDA NewAge WRX STI Spec C / Twin Scroll 2001-2006 models