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Cobb Tuning Street Downpipes

Significantly reduce turbo lag with Cobb's truly engineered downpipe. Designed for optimal performance and durability, this downpipe features full 304 Stainless Steel construction. Starting from the turbo, exhaust gasses enter the cast stainless steel bellmouth housing that utilizes internal shapes and features impossible to create with standard tubing. This design feature was chosen specifically to reduce turbo lag, improve low-end torque, and offer superior durability in high HP, high temperature uses. Another improvement realized is the reduction of exhaust noise entering the cabin common with the thin-walled tubing used in nearly all other downpipes on the market.

From the cast bellmouth section the exhaust gasses smoothly flow through 3" mandrel bent stainless steel piping into a state-of-the-art metallic substrate catalytic converter. These metal substrate cats are designed for optimal durability and flow so well, they pose virtually no HP reduction on most street cars. The high-flow catalytic converter is included in the STREET version. The RACE version does not include any catalytic converter at all.

This system replaces both the stock downpipe section and final catalytic converter section. They will mate up perfectly to the stock or any aftermarket cat-back system designed to attach to the factory donut style flex gasket. A bung necessary to use the second factory O2 sensor is included. In addition, an auxillary O2 sensor bung is located near the turbo in a position that's easy-to-reach from the engine compartment for wide-band O2 sensor use during tuning sessions.

All flanges, hangers, O2 sensor bungs, casting and piping are constructed 100% from 304SS. TIG welding used exclusively.

All Mazda Cobb Tuning Street Downpipes
View All Mazda 3 Downpipes
Mazda 3Price
(2007-2008)
Mazdaspeed3 w/High Flow Cat$695.00  Add to Cart
All Mitsubishi Cobb Tuning Street Downpipes
View All Mitsubishi EVO Downpipes
Mitsubishi EVOPrice
(2008 and up)
3"$255.00  Add to Cart
3" SS Catted Test Pipe$325.00  Add to Cart
All Nissan Cobb Tuning Street Downpipes
View All Nissan GT-R Downpipes
Nissan GT-RPrice
(2008 and up)
3" Catless Kit (.375" Turbo Flange) - (.475" midpipe flange)$995.00  Add to Cart
All Subaru Cobb Tuning Street Downpipes
View All Subaru Forester Downpipes
Subaru ForesterPrice
(2004-2008)
w/High Flow Cat$595.00  Add to Cart
(2009-2010)
w/High Flow Cat$595.00  Add to Cart
View All Subaru Legacy Downpipes
Subaru LegacyPrice
(2005-2008)
GT- A/T Only w/High Flow Cat$595.00  Add to Cart
(2005-2009)
GT- M/T Only w/High Flow Cat$595.00  Add to Cart
View All Subaru STi Downpipes
Subaru STiPrice
(2004-2007)
w/High Flow Cat$595.00  Add to Cart
(2008 and up)
w/High Flow Cat$595.00  Add to Cart
View All Subaru WRX Downpipes
Subaru WRXPrice
(2002-2007)
w/High Flow Cat$595.00  Add to Cart
(2008 and up)
w/High Flow Cat$595.00  Add to Cart
 
Cobb Tuning Street Downpipe Reviews
  (8 of 10) 2 Reviews    Write Review
RatingDateModelReview
802/16/2013LegacyExtremely high quality downpipe. Excellent performance. My only issue is that the bung housing for the oxygen sensor is downstream of the cat, throwing a check engine light. This was easily solved however with the use of the access port tuner.
802/16/2013LegacyExtremely high quality downpipe. Excellent performance. My only issue is that the bung housing for the oxygen sensor is downstream of the cat, throwing a check engine light. This was easily solved however with the use of the access port tuner.

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Parts Available: 571202, 552200, 552202, 5C1200, 512202, 524202, 524212, 524202, 512202, 524202, 512202, 524202