ECS Tuning Ultimate IS20 Turbo kit

Early generation 2.0T Gen3 engines rely on a single hose connection to the turbo inlet pipe to create a slight vacuum to draw out crankcase vapors. This vacuum source can be significantly affected by aftermarket turbo inlet pipes, leading to incorrect PCV diaphragm operation, which can exacerbate oil consumption and pressure issues.

The latest IS20 turbo included in this kit would be most commonly found on the 2022+ Jetta GLI. Internally, this is identical to all other MQB IS20 turbos, but with a PCV port near the turbo outlet. This additional port allows customers to upgrade to the newest PCV valve system found on the MK8 GTI, or Golf R.

The MK8 system (when used as a retrofit) introduces a second connection (the venturi hose) that connects to the turbocharger outlet. This secondary vacuum source is more effective at drawing out crankcase pressure, especially under high-load conditions. The venturi effect also helps ensure the PCV diaphragm stays properly closed under boost, maintaining better crankcase vacuum even when running aftermarket turbo inlet pipes, which are known to interfere with the effectiveness of the stock MK7 PCV.

The MK8 Golf R PCV (Positive Crankcase Ventilation) valve offers several key benefits and design improvements over the MK7 version, making it a popular retrofit for MK7 GTI, Golf R, and 8V A3/S3 owners

The main benefits of the MK8 PCV system include:

• Improved Reliability: The MK8 design is generally considered less prone to failure than the MK7 PCV system, especially in high-performance or tuned applications.

• Better Crankcase Ventilation: It provides more robust crankcase pressure regulation, especially under boost, which is ideal for tuned engines or track use.

• Reduced Oil Blow-By and Ingestion: The design improvements help to prevent oil vapor from entering the intake system more effectively, which reduces oil consumption and the potential for carbon buildup on the intake valves.

• Boost Leak Prevention: The MK8 system is considered more robust under boost pressure, helping to eliminate annoying PCV-related boost leaks often found in highly tuned MK7 setups.

*The original turbo muffler is suggested. Aftermarket Muffler deletes would block off the flow to the port found on this turbo, which defeats the purpose of the PCV upgrade. If one is required, please use ES#3610622 muffler delete, and ES5376365 to plug the PCV port. The barb fitting would go on the muffler delete, and the PCV port would need to be plugged*