APR Intake System Back Tube Conversion for GTI/A3 2.0T EA888.4 (MQB Evo) | CI100053-B

The APR Intake System Back Tube Conversion (CI100053-B) is an essential upgrade for VW MK8 GTI and Audi 8Y A3 owners who are upgrading to a larger turbocharger. Specifically designed for those migrating from the factory Garrett turbo to a larger Continental turbo (found on the Golf R/S3) or a high-output hybrid unit, this back tube converts your existing APR CI100052 intake system to the higher-flowing CI100053 specification.

This conversion tube features a massive internal diameter to promote low pressure drop and high flow rates. Crucially, it includes an integrated Diverter Valve (DV) recirculation port, which is required for the throttle-mounted diverter valve configuration found on higher-output EA888.4 engine setups. This modular approach allows your intake system to grow with your vehicle's performance levels without requiring a completely new intake purchase.

Features:

• Turbo Upgrade Compatibility: Seamlessly converts a GTI/A3 (Garrett-based) intake to the Golf R/S3 (Continental-based) configuration.
• DV Recirculation Port: Features the necessary bung for factory DV recirculation, essential for proper boost management on upgraded turbo systems.
• High-Flow Geometry: The oversized pipe diameter ensures maximum air volume reaches the turbocharger inlet with minimal turbulence.
• Modular Design: Compatible with various APR turbo inlet adapters, allowing for precise port-matching to your specific turbocharger.
• Easy Integration: Direct replacement for the standard GTI/A3 back tube; retains the 109mm connection to the main intake airbox.

Product Specifications:

Required Components: This back tube requires a turbocharger-specific inlet adapter to complete the installation. For those using a Continental turbo, Part Number CI100053-C is required (sold separately).

Installation Instructions