Description
IROZ Motorsport Stage 2 & 3 Engine Catch Can Kits
Fitment: All Audi RS3 (8Y.1) DAZA DNWA Engines
THESE DO NOT FIT 8Y.2 (2025-2026 Model Years)
Extreme horsepower applications commonly suffer from excessive crankcase pressure. Correcting this results in better engine efficiency and free horsepower your engine has been holding back.
Note: 2024+ 8Y Model years require custom tuning support while 2022-2023 Model years do not in most cases as we have found in recent testing of Stock ECU Vehicles.
THIS DOES FIT ALL UNITRONIC 4″ TURBO INLETS (Use 16″ hose section without the Billet Inlet Adapter. This hose clamps directly to the Venturi system.)
While the OEM PCV system on the DAZA Based 2.5TFSI does an incredible job at separating oil from the crankcase gases, it starts to be easily overpowered as we increase the boost and horsepower.
Extreme boost pressures can result in high crankcase pressures. This can result in loss of power and engine efficiency under boost. Oil Leaks are common as well as crankcase pressure pushing oil past seals.
The factory crankcase ventilation system is a positive crankcase ventilated design. When under Extreme boost levels this translates to excessive pressures reaching as high as 6+psi.
We have approached a solution for this that retains the factory oil separation plate while allowing for full pressure evacuation.
- IMS Billet Engine Catch Can and Hardware Kit
- IMS Billet PCV Adapter Plate (2019+ Option)
- IMS Billet Turbo Inlet Adapter
- Dual Check Valve Design for 1000+HP Applications
- Vented Filter Lid
- Stainless Steel Coil Pack Hardware
Not For Use With Cars Running On Full Methanol.
Note: The Stage 3 PCV upgrade will require trimming of the Factory engine cover.
Below is an example of a 2019 Audi RS3 that has the OEM PCV System in Red, with crankcase pressure being shown in the lower graph. You can easily see that the crankcase pressure affects power. Using our parts, you can eliminate that crankcase pressure, have less oil pushed into the PCV system, and ultimately get free horsepower back!
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