This stainless steel decat downpipe is designed to improve exhaust gas flow, turbocharger efficiency and engine performance on the Subaru Impreza NewAge WRX STI (2001–2007).
Manufactured from high-quality T304 stainless steel, the downpipe replaces the restrictive factory downpipe and catalytic converters with a freer-flowing, one-piece design featuring a 3" bore.
Removing the catalytic converters and increasing the exhaust bore helps reduce back pressure, allowing exhaust gases to exit the turbocharger more efficiently. This can improve throttle response, turbo spool-up and overall engine performance, particularly on modified or tuned vehicles.
The downpipe features TIG-welded construction and CNC-machined flanges for strength, durability and accurate fitment. Integrated lambda sensor bosses allow the original oxygen sensors to be fitted, while the supplied gaskets help simplify installation.
Features
Manufactured from high-quality T304 stainless steel
3" bore for improved exhaust gas flow
Also available with a 2.5" outlet
One-piece decat downpipe design
Replaces the standard downpipe and catalytic converters
TIG-welded construction for strength and durability
CNC-machined flanges for accurate fitment
Lambda sensor bosses for original O2 sensors
Freer-flowing design to reduce exhaust restrictions
Potential improvements in throttle response and turbo spool-up
Gaskets included
Vehicle Fitment
Subaru Impreza NewAge WRX (2001–2007)
Subaru Impreza NewAge STI (2001–2007)
Chassis: GDA
Please Note: Not suitable for Spec C twin-scroll turbo models.
This is a decat downpipe that removes the factory catalytic converters. It is intended for off-road and motorsport use only and is not suitable for use on UK public roads.
