Available tuning options — Stage 1 and Stage 2

What is a hybrid turbo?

A hybrid turbo retains an architecture suited to the vehicle whilst incorporating internal modifications. Depending on the upgrade stage, these may involve the compressor wheel, its geometry, the housing, the thrust bearing system or the balancing. The aim is dto adapt the compression capacity and the air flow rate dwithout limiting the modification to the appearance of the impeller.

MFS compressor wheel: standard or ‘ Performance ’?

MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. A standard MFS wheel can retain a geometry close to the original: the manufacturing process and the polished finish are not sufficient to demonstrate an increase in flow rate. An MFS impeller Performance is based on a geometry adapted to the modification, as is the case here with a fan that is larger and taller than the d’original. A standard MFS fan can be just as shiny as an MFS fan Performance. It is not its appearance that determines its performance, but its geometry and its ability to move more d’air.

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

The compressor impeller draws in and then compresses the air destined for the engine. Its diameter, profile, height, width and the arrangement of its blades influence its aerodynamic behaviour. A suitable geometry can move more d’air under certain conditions, but the result also depends on the casings, the turbine, the boost pressure and the engine tuning. A larger impeller therefore does not, on its own, guarantee better performance in all conditions.

Reliability and balancing of the hybrid turbo

The 360° thrust bearing distributes axial forces over a larger surface area. The rotor undergo dhigh-speed balancing at 150,000 rpm on a Cimat VSR test bench to minimise vibrations and mechanical stresses. However, these features do not compensate for poor installation, inadequate lubrication or an unsuitable engine configuration.

Engine remapping and preparation

Operating da hybrid turbocharger may require adjustments to the mapping, boost pressure, fuel injection, exhaust system and cooling. The transmission and other vehicle components must also be checked in line with the tuning. The wastegate must be adjusted correctly. A hybrid turbo does not automatically guarantee a power gain without appropriate tuning.

Turbo specifications

OEM part numbers

Manufacturer’s part numbers

Compatible vehicles and applications

Additional technical specifications

Fitting instructions

How do you identify the correct turbo?

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

If in doubt, contact ALFI TURBO with the part number clearly visible on your original turbo d.