CTS Race 4″ downpipe for BMW N55 (electrical wastegate)

CTS-EXH-DP-0023 - CTS Turbo Stainless Steel Downpipe for BMW N55 Engine (EWG) - 4 Inch

Unleash the full potential of your inline 6-cylinder engine with the CTS Turbo downpipe (Part Number: CTS-EXH-DP-0023). Specifically designed for BMW N55 engines equipped with an electric wastegate (EWG), this performance component is the key element for achieving Stage 2 and beyond.

High-Precision Performance and Engineering

The original BMW downpipe is equipped with a restrictive catalytic converter that limits exhaust gas flow and increases turbocharger temperature.

The CTS Turbo downpipe replaces this element with a 4 inch (101mm) diameter tube, machined from high-quality T304 stainless steel. Thanks to its TIG welds and CNC-machined flanges, it guarantees maximum airflow and exceptional durability, even under heavy use or in motorsport competition.

By installing this stainless steel downpipe, you will benefit from a drastic reduction in turbo lag, more responsive acceleration, and a much more aggressive and deep exhaust note, typical of BMW Motorsport.

Key Product Features:

• 4-inch Diameter: Ultra-smooth airflow for rapid exhaust gas extraction.
• T304 Stainless Steel: Maximum resistance to corrosion and extreme heat.
• Hand-welded TIG: Handcrafted finish for structural strength Perfect.
• O2 Sensor Plugs: Pre-drilled holes for the original sensors.
• Power Gain: Significant increase in torque and horsepower (requires ECU remapping).
• EWG Compatibility: Designed specifically for the N55 turbo with a 4" outlet (electric wastegate).

Vehicle Compatibility (N55 EWG engines only)

This performance part is compatible with the following BMW models produced after July 2013 (equipped with an electric wastegate):

1 & 2 Series:

• BMW M135i / M135ix (F20/F21): 07/2013 - 2016
• BMW M235i / M235ix (F22/F23): 2014 - 2016
• BMW M2 (F87): 2016 - 2018 (N55 engine)

Series 3 & 4:

• BMW 335i / 335ix (F30/F31/F34): 07/2013 - 2015
• BMW 435i / 435ix (F32/F33/F36): 07/2013 - 2016

Important Note: Before purchasing, be sure to check whether your vehicle has an electric (EWG) or mechanical (PWG) wastegate. This model has a 4-inch turbo connection flange.

CTS Turbo Expertise at the Service of Your BMW

As a specialist retailer of performance parts, we recommend the CTS Turbo brand for its rigorous manufacturing standards. The CTS-EXH-DP-0023 part number is a must-have for optimizing turbo cooling and increasing engine reliability under heavy track conditions.

Package Contents: 1x Stainless Steel Downpipe, gaskets and clamps not included (original parts can be reused, or separate purchase is recommended).

Warning: This This product is strictly reserved for use on closed circuits or in competition. Engine remapping (Stage 2) is mandatory to clear the engine warning light associated with the removal of the original catalytic converter.