Available tuning levels — Stage 1, Stage 2 and Stage 3

What is a hybrid turbo?

A hybrid turbo retains an architecture suited to the vehicle whilst incorporating internal modifications. Depending on the modification package, these may involve the compressor impeller, the turbine impeller, the housings, the thrust bearing system and the balancing.

The aim is d to adapt the compression capacity and the air flow rate d. A hybrid turbo is not defined solely by the appearance of its impeller: the geometry of the components and how they work together determine its performance.

MFS compressor wheel: standard or Performance?

MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. This technology describes a manufacturing process and does not, on its own, guarantee an increase in air flow rate d.

A standard MFS impeller can retain a geometry close to the original. An ‘ Performance ’ MFS impeller can have a profile, height, width or diameter tailored to the tuning objective. The impellers documented here are made from forged aluminium, with a geometry that is lighter, larger and taller than the or d; the data provided indicates an additional compression capacity of 15 per cent.

A standard MFS impeller can be just as shiny 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 contribute to power output only when combined with a suitably tuned engine.

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

The compressor impeller draws in and then compresses the air admitted by the engine. Its diameter, the blade profile, their height, width and arrangement influence the aerodynamic behaviour and the volume d of air displaced.

The result also depends on the casings, the turbine wheel, the boost pressure and the engine tuning. A larger wheel does not automatically guarantee better performance and may alter the response time as well as the range d of optimal operation.

Reliability and balancing of the hybrid turbo

The 360° thrust bearing, documented at each stage, distributes the axial forces around the shaft. It helps the turbo adapt to the stresses of the engine modification without making the assembly insensitive to assembly or lubrication faults.

The rotor is balanced at high speed, up to 150,000 rpm, on a Cimat VSR test bench. This process aims to minimise vibrations and mechanical stresses during operation.

Engine remapping and tuning

The engine mapping and boost pressure control must be adapted for to make the most of the hybrid turbo’s characteristics. The fuel injection, exhaust, cooling, intake and transmission must also be checked or adjusted depending on the level of tuning. The wastegate must be adjusted when remapping the ECU.

Turbo part numbers

OEM part numbers

Manufacturer’s part numbers

Compatible vehicles and assignments

Toyota

Additional technical specifications

Fitting advice

How do you identify the correct turbo?

Check the turbo’s part number d the original, OEM and manufacturer part numbers, as well as the model, engine type, power output, production period and engine code. An identical engine type does not always guarantee compatibility.