CTS Turbo Catless 4″ Downpipe BMW N55 (Electric Wastegate) X4 M40i

🔧 CTS Turbo Catless Downpipe – BMW N55 (Electronic Wastegate) | F26 X4 M40i

Unlock the full potential of your BMW X4 M40i (F26) with the CTS Turbo Catless Downpipe, designed specifically for N55 engines equipped with an electronic wastegate. This performance downpipe is engineered to deliver maximum exhaust flow, improved turbo response, and a significantly more aggressive exhaust note – all without the limitations of the restrictive factory catalytic converter.

✅ Key Features:

• Precision Fitment – Designed with advanced CAD software for a seamless OEM replacement

• High-Quality Materials – Made from premium T304 stainless steel, TIG welded, and back-purged for lasting durability

• Performance Gains – Reduces backpressure, increases horsepower and torque, and improves throttle response

• Aggressive Sound – Enhanced exhaust tone under acceleration, with no drone while cruising

• Optimized Design – Developed and tested on real vehicles for real-world reliability

• Plug & Play Fitment – Compatible with stock or aftermarket exhaust systems

📌 Application Guide:

• BMW X4 F26 M40i (2014–2018)
  ➤ Engine: N55 with Electronic Wastegate (EWG)

⚠️ Important Note: This product is for off-road use only. A Stage 2 tune (e.g., Bootmod3) is strongly recommended to prevent a Check Engine Light (CEL) and to fully optimize performance gains.

📈 Why Choose CTS Turbo’s N55 Catless Downpipe?

The stock downpipe on N55-powered vehicles is a major bottleneck. This CTS Turbo upgrade eliminates the restrictive catalytic converter to deliver the power, sound, and responsiveness your X4 M40i truly deserves. Whether you're building a full performance setup or just want more fun from your daily driver, this is the ultimate foundation for tuning.

🛠 What’s Included:

• 1x CTS Turbo Catless Downpipe (EWG N55)

• Installation hardware

• Fitment-ready TIG-welded stainless steel construction