This is the GrimmSpeed Limited Catted Downpipe. This downpipe is the result of countless hours invested in research and development to provide the performance consumer with a quality product guaranteed to deliver performance. This is a direct replacement of the OEM downpipe that is highly restrictive and leaves much room on the table for improvement. The GrimmSpeed unit combines smooth bends and a larger piping diameter to remove as much turbulence from the exit path of the turbocharger which will add more horsepower, and more torque while reducing the turbo lag.

DETAILS:

304 stainless steel construction

1/2" thick 3D contour flanges

3" piping diameter

3D CAD designed to determine the contours and clearance from the firewall

Divorced wastegate design for optimal flow

Designed with a secondary O2 bung for those adding a wideband O2 sensor

FARO arm design

Built-in high-flow 300-cell metallic substrate catalytic converter

Expertly TIG-welded

Includes new exhaust gaskets and hardware included for the installation

Made in the USA

LIMITED FEATURES:

Flanges designed with recesses for each tube

3D contour to smoothly transition the irregular shape of your internal wastegate outlet into the divorced tube for tighter boost control

NOTE:

Tune required for optimal performance

Grimmspeed LIMITED Downpipe Catted - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008

Part #: grm007060

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