The Turner Upgraded Silicone Upper Air Intake Pipe provides improved turbo response, increased airflow, and less turbo lag. This silicone upgrade is a direct replacement for the OE brittle plastic air intake pipe. BMW uses cheap plastic intake pipes that are known to quickly deteriorate and crack, or even worse explode under high stress. This is a replacement for the upper plastic intake pipe, part number 13717605638. This pipe runs directly from the turbo inlet to the OE airbox. The upgraded silicone intake pipes are designed with a smooth contour for unobstructed flow compared to the OE molded plastic. By eliminating the restrictive muffler in the OE intake tube, this provides less restriction to the turbo, and more “intake noises”. This allows you to hear more of the turbo spool and the blow-off valve. Turner Air Intake Pipes sport a two-piece modular design, this allows you to run either this lower intake tube (Turbo Inlet - From Turbo to Intake Pipe - ES4057664), the upper intake pipe (Intake Tube - From Turbo Inlet to Factory Airbox - ES4057673), or both (ES4057527) for maximum performance. By eliminating the restrictive muffler in the OE upper intake tube, this allows for more of the “intake noises”, such as turbo spool or the BOV. The upper intake tube utilizes a 6061-T6 black anodized coupler to connecting the silicone intake tube. The 6061-T6 adapters provide a more secure and durable connection than the OE plastic tube. Both Tubes are Constructed of 5-Ply reinforced silicone for improved durability. Silicone offers reduced thermal conductivity for improved performance, as well as improved resistance to ozone and UV degradation for improved durability. Features:
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