This hybrid turbo, designed for a 2.5 TD engine, features d an internal modification aimed at adapting the d air flow rate and the. compression capacity. Depending on the upgrade package selected, it is fitted with a high-flow MFS compressor impeller, a 360° bearing retainer and additional modifications to the casings or the turbine.
Installation is designed to require no external modifications to the original assembly d. Compatibility must, however, be confirmed using the reference numbers marked on the dismantled turbocharger.
Available versions — Stage 1, Stage 2 and Stage 3
Stage 1
Compressor wheel: MFS high-flow
Bearing stop: 360°
Balancing: high-speed at 150,000 rpm on a Cimat VSR test bench
This modification primarily affects the compressor impeller in order d adapt the flow rate d the air, whilst retaining a configuration designed for allow installation without any external modifications.
Stage 2
Compressor impeller: MFS high-flow oversized
Intake casing d: re-profiled for accommodate the new impeller oversized
Bearing thrust ring: 360°
Balancing: high-speed 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 depending on the engine configuration and mapping.
Stage 3
Compressor impeller: MFS high-flow oversized
Intake housing d: re-profiled for to accommodate the new impeller oversized
Turbine impeller: high-flow oversized
Turbine housing: re-profiled for to accommodate the new impeller oversized
Bearing thrust ring: 360°
Balancing: high-speed at 150,000 rpm on a Cimat VSR test bench
This configuration applies to both the compressor and turbine sections. The oversized impellers require the corresponding housings to be re-profiled and may alter the flow rate as well as the turbocharger’s response time.
What is a hybrid turbo?
A hybrid turbo is based on an existing architecture that has been adapted for to accommodate internal components that differ from the original configuration d. Depending on the modification stage, the changes may involve the compressor impeller, the housings, the turbine impeller, the thrust bearing 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, the machining of the housings and the balance of the assembly also play a decisive role.
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 airflow d'air. A standard MFS wheel can retain a geometry equivalent to that d'of the original.
An MFS wheel Performance can be given a geometry tailored to the tuning objective. For this product, the wheel is documented as being lighter, larger and taller than the d original, with a claimed 15 per cent higher compression capacity.
A standard MFS impeller can perform just as well 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 airflow can only be fully utilised 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 blade arrangement 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 automatically guarantee a better result and may alter the response time.
Reliability and balancing of the hybrid turbo
The 360° bearing thrust ring helps to distribute the axial forces exerted on the rotating assembly. The rotor is balanced at high speeds, up to 150,000 rpm, on a Cimat VSR test bench to minimise vibrations and mechanical stresses. However, this balancing does not compensate for inadequate lubrication, contamination or incorrect installation.
Engine remapping and preparation
Operating d a hybrid turbo requires appropriate engine management. The mapping, boost pressure, fuel injection, exhaust and cooling systems must be checked or adjusted according to the modification. The clutch, the transmission and other components under strain must also be checked. The wastegate must be adjusted when remapping the ECU.
Turbo part numbers
OEM part numbers
MD170563
MD187208
Manufacturer part numbers
49177-02501
49177-02500
Compatible vehicles and applications
No specific vehicle applications are documented. Compatibility must be established based on the original turbo part numbers d.
Additional technical specifications
Product type: Hybrid Turbo
Engine: 2.5 TD
Installation: fits without external modifications
Documented modifications: Stage 1, Stage 2 and Stage 3
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 and inlet are clean and free from foreign objects.
Prime the system in accordance with the applicable recommendations and follow the manufacturer’s instructions. The engine management system and the wastegate must be adjusted by a qualified professional.
Unresolved lubrication issues may lead to further turbocharger failure.
How do you identify the correct turbo?
Check the part number of the original turbo d, the OEM and manufacturer part numbers, as well as the make, model, generation, body style, engine type, power output, years of manufacture and engine code. An identical engine type does not always guarantee compatibility.
⚠️ 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 product sheet. An identical engine specification does not always guarantee compatibility.
If in doubt, please contact us with the full part number taken from your turbocharger.
