Your cart is empty
SAVE 30% ON REVO ECU AND TCU SOFTWARE. DISCOUNT AUTOMATICALLY APPLIED AT CHECK OUT
The Revo Carbon Lid and intake hose have been designed and engineered to directly replace the stock airbox lid, filter and pipe found in the Audi S4 & S5 B9. The Revo Carbon Lid offers a high-quality replacement, which perfectly fits the OEM lower part of the airbox, whilst allowing a larger filter to be fitted, increasing airflow and therefore performance of your vehicle.
With ample efficiency for a stock vehicle, the OEM system quickly becomes a choking point for the engine when running Revo Software. The Revo Carbon Lid has been designed to increase the diameter of the outlet to increase the volume of flow and promote smoother airflow. The closed air system helps eliminate heat soak whilst its design allows more airflow to be distributed evenly around the Revo air filter.
The Revo Turbo Hose has an increased inner diameter of 41% to match the large carbon lid outlet that then gradually tapers to the stock turbocharger inlet to optimise airflow. Designed to replace the corrugated plastic hose, this upgrade reduces restriction and maximises smooth airflow improving both power and torque throughout the rev range. The stepped internals ensure a smooth transition of air between components.
An intake system is only as good as the filter. This kit comes complete with a custom Revo foam filter, supported by galvanised epoxy-coated mesh for strength under load. Revo three-stage foam filters work very differently from conventional paper or cotton-gauze alternatives designed to trap particles on the outer layer. Revo filters trap debris and particles within the foam layers, allowing air to still navigate through. The filter can be cleaned and re-oiled to keep performance at the optimal level.
RESEARCH AND DEVELOPMENT
All Revo products are designed in-house and are rigorously tested utilising an in-house 3D scanning, 3D printing, latest CAD and CFD programs, hub dyno and Revo data acquisition software. The Revo intake allows the turbo to run more efficiently, intake a larger volume of air and minimise turbulence to increase airflow, as highlighted during controlled testing.
PERFORMANCE
Back-to-back testing of the stock air intake system and the Revo kit were carried out. Fitted to an Audi S4 B9 with Revo ECU Stage 1 Software, but otherwise stock vehicle. The results show improvement in performance from the midrange to RPM limit where there is more demand for airflow. This increased airflow delivers impressive peak performance gains of +11HP @6100rpm and +13NM @6200RPM over the stock intake system.
