Available kits — Stage 1, Stage 2 and Stage 3

What is a hybrid turbo?

A hybrid turbo retains an architecture suited to the intended installation whilst incorporating modified internal components. Depending on the upgrade stage, the modification may involve the compressor wheel, its dimensions, the housings, the turbine wheel, the thrust bearing or the balancing.

The aim is d to adapt the turbocharger’s compression capacity and air flow rate d. However, a hybrid turbo is not defined solely by the appearance of its impeller: the geometry of the components and how they interact determine its behaviour.

MFS compressor wheel: standard or Performance?

MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. This manufacturing process alone is not sufficient to demonstrate an increase in air flow rate d. A standard MFS wheel may retain a geometry equivalent to the original.

An MFS impeller Performance can utilise a geometry tailored to the tuning objective: profile, height, width, diameter or blade arrangement. For this product, the MFS impeller is described as lighter, larger and taller than the d original, with a claimed 15 per cent higher compression capacity.

A standard MFS impeller can be just as effective as an MFS impeller Performance. It is not its appearance that determines its performance, but its geometry and its ability to move more d'air. A higher flow rate can support a suitable engine tuning, without alone determining the final power output.

Why does the geometry of the blades influence the air flow rate d?

The compressor impeller draws in and then compresses the intake air. Its diameter, profile, height, width and the arrangement of its blades influence its aerodynamic behaviour and the volume d of air displaced.

The result also depends on the compressor housing, the impeller and the turbine housing, the boost pressure and the engine set-up. An increase in size is therefore not necessarily an advantage in all conditions and may alter the response time.

Reliability and balancing of the hybrid turbo

The 360° bearing stop, present on the three documented stages, distributes axial forces over a wide surface area. It must be combined with proper lubrication and suitable operating conditions d.

Each engine is subjected to high-speed balancing at 150,000 rpm on a Cimat VSR test bench. This process aims to minimise vibrations and mechanical stresses on the rotor, but does not compensate for inadequate lubrication or incorrect installation.

Engine remapping and preparation

To make the most of the characteristics d of a hybrid turbo, appropriate engine management is required. Map settings, boost pressure, fuel injection, exhaust and cooling must be monitored or adjusted according to the level of tuning.

The wastegate must be adjusted when remapping the ECU. The clutch, gearbox and other components under stress must also be checked in accordance with the vehicle and its intended use.

Turbo part numbers

OEM part numbers Mercedes

Manufacturer part numbers

Compatible vehicles and applications

Mercedes

Additional technical specifications

Installation advice

How do you identify the correct turbo?

Check the part number marked on the original turbo d, then compare the OEM and manufacturer part numbers.. Also check the make, model, generation, body style, engine type, power output at hp, the production period and the engine code where available.

An identical engine specification is not always sufficient to confirm compatibility between two turbochargers.

If in doubt, please contact us, providing the full part number found on your turbocharger.