The Volkswagen Golf Mk6 1.4 TSI CAV engine is equipped with a single turbocharger, and it’s part of the EA111 engine family. Here’s a detailed description of the turbocharger setup:

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Turbocharger Description – VW Golf Mk6 1.4 TSI CAV

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Engine Code

:

• CAVD
• 1.4L TSI (Twincharged in some variants, but CAVD is usually single turbo)

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Turbo Type

:

• Single Turbocharger (Wastegate type)
• Manufacturer: IHI (common unit: IHI RHF3 series like the IHI VL36 or VL37 depending on region and model year)

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Turbo Features

:

• Exhaust-driven turbo with integrated wastegate actuator
• Oil and water-cooled bearing housing
• Small-frame turbo for fast spool and low-end torque

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Boost Pressure

:

• Typically around 0.8 to 1.2 bar (11–17 psi), depending on ECU mapping and model year.

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Location

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• Mounted on the exhaust manifold, located at the rear of the engine bay (firewall side).

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Intercooling

:

• Equipped with a front-mounted intercooler (FMIC) to reduce charge air temperature and increase efficiency.

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Materials

:

• Turbine housing: cast iron
• Compressor housing: aluminum

🛠 Common Issues:

• Turbo wastegate rattle
• Boost leaks due to cracked plastic charge pipes
• Oil leaks from turbo feed/return lines
• PCV system and intake valve carbon buildup (indirect injection)

If you’re working with a CAVE engine code, that’s also a 1.4 TSI single turbo but with slightly different turbo specs (still IHI-based, usually VL37).

Let me know if you need a photo reference, part number, or the twincharged (turbo + supercharger) version used in the CAVF or CTHA engines.