This HF-Series intake upgrade kit for the A4 and A5 B9 model range with 1.4, 2.0, 2.9 and 3.0 TFSI engines combines an optimised air intake system in an OEM-style design with maximum performance.
Key features:
- increased volume thanks to the upgraded upper cover
- air filter with a 90 mm trumpet connection
- OEM appearance
- developed using 3D scanning and flow simulation
- dry, reusable Pipercross air filter
- flow-optimised air path
- includes an upgraded intake pipe and turbo inlet, depending on the selected engine version
- maximum performance and capability
Note: Unlike inlet kits from other manufacturers, the RS versions do not require the engine cover to be cut. The kit fits without any further modifications.
The kit was developed using extensive 3D scanning, flow simulations and testing on a test bench, race track and road. This enabled us to achieve optimum performance together with a pleasant improvement in intake sound.
It is suitable for both standard vehicles and vehicles with tuned engines. On the 2.9 TFSI engine in the RS4/RS5, simply fitting this intake system to the standard engine, without software or other hardware changes, produced a measured gain of +25 PS and +40 Nm. We achieved the same result on three different vehicles, demonstrating the considerable potential of this upgrade.
Suitable for: Audi A4 IV (B9), Audi A5 II (F5/F53), Audi RS4 V (B9), Audi RS5 II (F5).
Manufacturer’s vehicle data
- HFI Upgrade Air Intake Audi A4/S4/RS4 B9, A5/S5/RS5 B9
Original product name by HG Motorsport (»z.B.« = e.g.). Please check model, year and engine of your vehicle before ordering; if in doubt, contact us and we will check for you.
Approval
The manufacturer does not state an ECE, ABE or Teilegutachten approval for this part.
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