1.8T 20V Top-Mount Manifold With Ext Wastegate

1.8T TOP-MOUNT EXHAUST MANIFOLD – EXTERNAL WASTEGATE CONNECTION

Developed for Audi / VW 1.8T engines with a high-performance focus, this top-mount exhaust manifold delivers increased power, improved exhaust flow, and precise boost control in a single professional solution. It is designed to unlock the engine’s full potential safely and efficiently in performance and motorsport-oriented turbo applications.

TOP-MOUNT DESIGN ADVANTAGES

The top-mount configuration positions the turbocharger above the exhaust ports, offering significant benefits—especially for large turbo setups:

• Easy access to the turbocharger, wastegate, and related components

• Shorter, flow-optimized downpipe routing

• Improved heat management and easier servicing

An ideal design for racing, track use, and high-power performance builds.

EXTERNAL WASTEGATE CONNECTION

The integrated external wastegate port enables far more precise and stable boost control:

• Reliable and consistent boost regulation

• Minimized boost creep risk

• More efficient turbo operation at high boost levels

• Enhanced engine safety for aggressive tuning and large turbo applications

ADVANCED EXHAUST FLOW

Thanks to flow-optimized runner geometry and a carefully designed collector:

• Exhaust gases are evacuated faster and more smoothly

• Back pressure is significantly reduced

• Turbo lag is lowered, providing quicker spool and sharper throttle response

This design delivers noticeable performance gains, particularly in the mid- to high-RPM range.

PERFORMANCE BENEFITS

• Precise boost pressure control

• Increased engine power and overall efficiency

• Faster turbo response with reduced lag

• Reduced thermal and mechanical stress on the engine

• Stable operation under high temperature and pressure conditions

WIDE TURBO COMPATIBILITY

Supplied with three different adapter rings, ensuring compatibility with many popular turbo brands:

• Garrett

• Turbosmart

• TiAL

The adapter rings allow seamless installation and optimal performance regardless of the selected turbocharger brand.

INSTALLATION NOTE

Depending on the turbocharger and wastegate actuator design, minor material removal from the valve cover may be required to ensure sufficient clearance.

APPLICATIONS

• High-performance daily driving

• Track and drag racing projects

• Large turbo conversions

• Custom exhaust and downpipe systems

This top-mount, external-wastegate 1.8T exhaust manifold is a high-performance solution engineered for those seeking more power, faster response, and a safer, more controlled turbo setup.