4.0 TFSI High-Performance Cast Manifolds

AUDI 4.0 TFSI High-Performance Cast Exhaust Manifolds

Product information:

The exhaust manifolds are cast from heat-resistant 1.4849 stainless steel. To meet the demand for high quality exhaust manifolds, the design is made for ease of installation. They also feature high durability and provide the best possible flow. During development, 3D scanning and 3D measurement were used to lay the foundation for design with CAD and CFD. With the help of bionic design, starting with our pipe elbows, a lot of optimization loops were done until the final designs.

With these manifolds, the cross-section has been maximized and all cylinders have been brought together. The back pressure is significantly reduced, which in turn brings more power and lower exhaust gas temperature.

Thanks to the flow-optimized design, power output above 1000 hp is also possible

Advantages over the OEM part:

• More throughput due to flow optimized design.
• More throughput thanks to flow-optimized bionic design.
• All 4 cylinders are within a tolerance range of 1%.
• For comparison: OEM are designed with a tolerance of up to 5%.
• 36.8mm runners at head flange. 
• 50mm at turbo connection. 
• Material stainless steel 1.4849 (up to 1100 °C)
• Investment casting for uniform wall thickness and surface quality

Additional information:

• It is only the manifold as shown in the pictures, the exhaust housing of the turbocharger must be welded. Of course, various other turbochargers can be attached to these manifolds.
• For the welding of the original exhaust housing adaptation work is necessary
• To prevent fire damage, we recommend installing thermal insulation.
• For the assembly we recommend to use the original Audi screws and nuts.
• Left and right cast manifold without exhaust housing