E82 135i, E9X 335i N54 CP-E Downpipes With Sport Cats
- Mfg Part #
- Turner Part #
Power Gain: +8-12hp
Torque Gain: +8-12ft-lbs
These N54 downpipes feature larger piping and cat sections that are freer-flowing than the original cats for better flow and less backpressure. By removing exhaust restrictions the turbos can spool up faster which makes more boost sooner. With additional tuning, more power is available. There are downpipes that delete the primary cats and can leave the exhaust with a dirty and awful smell. These CP-E downpipes are built with a set of sport cats to keep the exhaust cleaner.
The CP-E downpipes are among the finest crafted turbo downpipes we have seen for the N54 engine. They use a CAM/CAD process, and automated manufacturing, that ensures a tight and precise tolerance for fitment and construction. This attention to detail and craftsmanship will never be found on the cheap auction sites. These pipes are made from 304 stainless steel, 3" diameter piping from the inlet to the cat, and tuned piping down to meet the stock exhaust section. These are a direct replacement for the stock downpipe and cat section, including fitment for Xi AWD models. No permanent modifications are made and the upgrade is completely reversible. You retain your factory oxygen sensors. Add a O2 bung kit if you wish to install a wideband sensor on the downpipe.
Pick up a Cobb AccessPort programmer to go along with these downpipes. Additional tunes are available that will get the most out of this upgrade. Not only will the Cobb AP increase horsepower and torque but special programming is available to keep fault codes, check engine lights, and limp mode from disrupting your day. It has other features too such as data logging and diagnostic fault code reading and clearing. The Cobb AP is the most sophisticated programming tool available for the 135/335 and no tuning plan should be without one..
Made in the USA.
This product modifies (but does not remove or defeat) emissions equipment. For this reason this product may not be CARB compliant, and therefore not emissions legal in some states. Consult local laws and regulations in your area. For more information on this product, feel free to contact our sales department.
This item fits the following BMWs with the N54 engine:
2008-2012 E82 BMW 135i 1M Coupe
2006-2011 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2013 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2007-2013 E93 BMW 335i - Convertible
Left Hand Drive ONLY
This Part Fits the Following BMWs
|BMW||E82||1 M Coupe||N54 3.0L|