Turner Motorsport N55 Downpipe - With High Flow Catalytic Converter

Max gains of +26 WHP and +42 WTQ!
For vehicles with a production date after 7/2013
Mfg Part #
ECS Part #
Turner Motorsport
Free Shipping Free Shipping
Availability: In Stock
Does this fit my vehicle?

Product Details

For vehicles with a production date after 7/2013

Turner meticulously designed their N55 downpipe inhouse to maximize flow, eliminating restriction and increasing power. Turner's high flow catted downpipe allows your N55 to produce more power, more torque, and a great sound. Turner's precision designed downpipe upgrade features larger piping and a sport catalytic converter for increased flow and reduced backpressure. Removing exhaust restrictions caused by the stock catalytic converter allows your turbo to spool faster down lower in the power band. Tuning is required to keep emissions fault codes and check engine lights from appearing, and it also allows you to get the most out of your new Turner catted downpipe  - we recommend Turner's N55 tune: ES#3646920

  • Peak gains:
    • +11 WHP
    • +37 WTQ!
  • Max gains:
    • +26 WHP @ 5000 RPM
    • +42 WTQ @ 3300 RPM


  • All 304 stainless steel construction
  • OE fitment 
  • Less restrictive than OE downpipes (sport cats!)
  • Lower boost threshold and improved turbo response

Note that this downpipe features a 200 cell high flow catalytic converter, this may throw a check engine light. We recommend the Turner N55 tune (ES3646920) to remedy this.


  • Aftermarket ECU software is recommended to maximize performance gains.
  • This product will cause a MIL (Malfunction Indicator Lamp) on factory stock tune.
  • This product is in intended for off-road use only. Not intended for states our counties where regulations prohibit its use.
Cross Reference
  • 18328602882

This Part Fits the Following Vehicles

Make Model Submodel Engine
BMW F30 335i N55 3.0L
BMW F30 335i xDrive N55 3.0L
BMW F32 435i N55 3.0L
BMW F32 435i xDrive N55 3.0L
BMW F33 435i N55 3.0L
BMW F33 435i xDrive N55 3.0L
BMW F34 335i xDrive N55 3.0L
BMW F36 435i N55 3.0L
BMW F36 435i xDrive N55 3.0L
BMW F87 M2 N55 3.0L
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

Kit Contents


ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings