This hybrid turbo for, powered by the 0.9 TwinAir 78 hp, is available in several tuning levels.. Its design plug & play allows for Installation without modification of the original layout d, whilst the internal modifications vary depending on the tuning stage chosen.
The documented applications include, in particular, the MiTo Alfa Romeo, the Panda Fiat and the Punto IV, as well as the Ypsilon Lancia fitted with the 0.9 TwinAir engine.
Available packages — Stage 1, Stage 2 and Stage 3
Stage 1
Compressor wheel: MFS high-flow
Thrust bearing system: 360° thrust bearing
Balancing: high-speed balancing at 150,000 rpm on a Cimat VSR test bench
dThis design modification adapts the compressor impeller so th d's compression capacity and air flow rate can be adjusted, whilst retaining a configuration designed for integration without modification.
Stage 2
Compressor impeller: MFS high-flow oversized
Intake casing d: re-profiled for accommodate the new impeller oversized
Thrust bearing system: 360° thrust bearing
Balancing: high-speed balancing at 150,000 rpm on a Cimat VSR test bench
The Stage 2 combines a oversized compressor impeller with a d intake housing, re-profiled. This modification is designed to alter the compressor’s air displacement capacity d, with performance that also depends on the engine settings.
Stage 3
Compressor impeller: MFS high-flow oversized
Intake housing d: re-profiled for to accommodate the new impeller oversized
Bearing system: 360° bearing stop
Turbine impeller: high flow oversized
Turbine casing: re-profiled for ly to accommodate the new impeller oversized
Balancing: high-speed balancing at 150,000 rpm on a Cimat VSR test bench
Stage 3 is fitted on both the compressor and turbine sides of the. The oversized impellers and the re-profiling of both housings adapt the air and gas flow capacities, with a potential impact on flow rate and response time depending on the engine configuration.
What is a hybrid turbo?
A hybrid turbo utilises a turbocharger architecture adapted for to accommodate modified internal components. Depending on the upgrade stage, modifications may involve the compressor wheel, the housings, the turbine wheel, the thrust bearing system and the balancing.
The aim is d to adapt the 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 are combined determine its performance.
MFS compressor wheel: standard or Performance?
MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. This manufacturing process alone does not guarantee an increase in air flow rate d. A standard MFS wheel may retain a geometry equivalent to that d of the original.
An MFS impeller Performance can be given a geometry tailored to the tuning objective. Depending on its design, this adaptation may concern the profile, height, width or arrangement of the blades, as well as the impeller’s diameter.
A standard MFS impeller can be just as efficient as a custom- Performance d MFS impeller. It is not its appearance that determines its performance, but its geometry and its ability to move more d air. A higher airflow can help generate more power only when combined with appropriate engine tuning.
Why does the geometry of the blades influence the air flow rate d?
The compressor impeller draws in and then compresses the air sent to the engine. Its diameter, profile, height, width and the arrangement of its blades directly influence its aerodynamic behaviour.
A suitably designed geometry can move more air d under certain conditions. The result also depends on the casings, the turbine, the boost pressure and the engine management system. A larger impeller therefore does not automatically guarantee better performance and may alter the response time.
Reliability and balancing of the hybrid turbo
The 360° bearing stop, featured on all three stages, distributes axial forces over a wide surface area. It helps the bearing adapt to operating stresses without making the turbocharger 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 the vibrations and mechanical stresses generated by rotation.
Engine remapping and preparation
Adjustments to the engine mapping and boost pressure control are necessary for to make full use of the hybrid turbo’s characteristics. The wastegate must be adjusted during this tuning process.
Depending on the level of tuning, the fuel injection, exhaust system, intake air cooling d and the clutch or gearbox must also be checked or adjusted. Fitting d a hybrid turbo alone does not guarantee a power increase.
Turbo part numbers
OEM part number
55243431
Manufacturer part numbers
49373-03012
49T73-03012
49373-03011
49373-03010
49373-03000
49373-03001
49373-03002
49373-03003
49373-03004
49373-03005
49373-03006
Compatible vehicles and specifications
Alfa Romeo
MiTo — 0.9 TwinAir — 78 hp
Period: not specified
Engine code : not specified
Fiat
Panda — 0.9 TwinAir —78 hp
Period: not specified
Engine code : not specified
Punto IV — 0.9 TwinAir —78 hp
Period: not specified
Engine code : not specified
Lancia
Ypsilon — 0.9 TwinAir —78 hp
Period: not specified
Engine code : not specified
Additional technical specifications
Product type: turbo hybrid
Engine: 0.9 TwinAir
Power: 78 hp
Installation: plug & play configuration, without modification to the layout
Fitting advice
⚠️ WARNING — IMPORTANT BEFORE INSTALLATION
Identify and rectify the cause of the previous fault. Check the lubrication circuit, as well as the oil supply and return d. Check that the pipes are clean, the inlet and that there are no foreign objects. Prime the system in accordance with the applicable recommendations and follow the manufacturer’s instructions. A lubrication fault that is not rectified may lead to further turbocharger failure.
How do you identify the correct turbo?
Check the part number marked on the turbo d the original, OEM and manufacturer part numbers, as well as the make, model, generation, engine type, power output,Year and engine code. An identical engine may be fitted with several different turbocharger configurations.
⚠️ Check your turbo’s part numbers
Before ordering, compare the part number marked on your original turbo d with the part numbers listed in this specification sheet. An identical engine specification does not always guarantee compatibility.
If in doubt, please contact us with the part number from your turbocharger.
