Audi A4 B8 2009year 1.8 CDH turbo charger use parts, The Audi A4 B8 1.8 TFSI with engine code CDH (also seen as CDHB or CDHA, depending on market and variant) is part of the EA888 engine family and is equipped with a turbocharged inline-4 petrol engine. Here’s a detailed description of the turbo system and engine characteristics:

Turbocharger Overview (CDH Engine Code)

• Turbo Type: Single-scroll turbocharger
• Manufacturer: BorgWarner (commonly used on EA888 engines)
• Model: Often K03 or a variant (specific part number depends on the production year and variant)
• Boost Pressure: Around 0.6–0.8 bar (8.7–11.6 psi) stock
• Wastegate: Internal, electronically controlled
• Intercooler: Front-mounted air-to-air intercooler
• Turbo Location: Integrated into the exhaust manifold for compactness and faster spool

Engine Specs (CDH 1.8 TFSI)

• Displacement: 1.8 liters (1798 cc)
• Configuration: Inline 4-cylinder, DOHC
• Fuel System: Direct fuel injection (TFSI)