Project Gamma S55 Downpipes & Tuning Package

Project Gamma downpipes for the BMW S55 engine are now available as a complete performance package with optional ECU tuning, allowing customers to select their preferred tuning platform at checkout. This bundle is an excellent way to run our high-flow downpipes smoothly and aggressively while achieving substantial performance gains at a reduced bundled cost.

By combining Project Gamma S55 Downpipes with your choice of Bootmod3 or MHD tuning, customers can unlock increased horsepower, torque, throttle response, and overall drivability. This package is a proven upgrade for enthusiasts looking to maximize the performance and sound of their S55-powered BMW.

Tuning Information

• Available tuning options:

  • Bootmod3

  • MHD

• An ENET cable and a compatible laptop or mobile device are required to flash the vehicle.

• Please email us with any questions regarding tuning compatibility or ENET cable requirements.

⚠️ Stage 2 Recommendation:
2-step colder spark plugs gapped to 0.22 are recommended for Stage 2 applications.

Project Gamma S55 Downpipes

Designed specifically for the BMW S55 engine, Project Gamma downpipes feature a full 3-inch diameter construction with a CNC-machined stainless steel v-band to pipe transition for precise fitment and maximum exhaust flow.

Unlike many competitors that reduce diameter near the turbo outlets, our downpipes maintain a true full 3D design all the way through, delivering superior airflow and performance. When paired with tuning, gains of up to 50 horsepower and 60 lb-ft of torque can be achieved.

• Constructed from 304 stainless steel

• Handcrafted for extreme rust and heat resistance

• Optimized for tuned and high-performance applications

Ceramic Coating Notice

The product images shown feature ceramic-coated downpipes. To protect your engine bay from potential heat damage, please select our Ceramic Coating add-on before checkout. Otherwise, the downpipes will be delivered in a polished finish.