This hybrid turbo is designed for the 2.5 TDI engine producing 174 hp, fitted to the Volkswagen Transporter T5 from 2003 onwards.. The kit combines a high-flow MFS compressor wheel, a 360° bearing stop and high-speed balancing, with additional modifications depending on the chosen upgrade package.
Designed for a Installation without modification, it retains an architecture suitable for fitting d the original. To make the most of its characteristics, a coherent engine tuning programme and appropriate adjustment of the boost management system are required.
Available tuning packages — Stage 1, Stage 2 and Stage 3
Stage 1
Compressor wheel: MFS high-flow
Thrustbearing: 360° thrust bearing
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR test bench
This modification is carried out on the compressor impeller to d adjust the compression capacity and d air flow rate, whilst retaining a configuration designed for for installation without modification.
Stage 2
Compressor impeller: MFS high-flow oversized
Inlet casing d: Reprofiled for accommodate the new impeller oversized
Thrustbearing: 360° thrust bearing
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR test bench
The Stage 2 combines a oversized compressor wheel with a reprofiled casing d'admission. This modification is designed to accommodate the flow rate of the new wheel without assuming d'a specific power gain.
Stage 3
Supercharger impeller: MFS high-flow oversized
d intake housing: Reprofiled for to accommodate the new impeller oversized
Thrustbearing: 360° thrust bearing
Turbine impeller: High-flow oversized
Turbine housing: Reprofiled for ly to accommodate the new impeller oversized
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR test bench
This version modifies the compressor and turbine sides. The performance achieved depends on the overall engine configuration, the boost setting and the intended operating conditions d.
What is a hybrid turbo?
A hybrid turbo is based on a turbocharger architecture adapted for accommodate modified internal components. Depending on the stage, the modification may involve the compressor wheel, the housings, the turbine wheel, the thrust bearing and balancing.
The aim is d to adapt the compression capacity and air flow rate d. A hybrid turbo is therefore not defined solely by the appearance of its compressor wheel, but by the consistency of its geometry and the accompanying mechanical modifications.
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. A standard MFS wheel may retain a geometry equivalent to that d of the original.
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. An Performance impeller may adopt a profile or dimensions suited to the modification, provided these changes are documented.
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 all influence its aerodynamic behaviour. An optimised 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 does not automatically guarantee better performance and may alter the response time.
Reliability and balancing of the hybrid turbocharger
The documented 360° thrust bearing distributes axial forces around the shaft. 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 incorrect installation or inadequate lubrication.
Engine remapping and preparation
Appropriate engine management is required for to make the most of the hybrid turbo’s characteristics. The mapping, boost pressure and wastegate settings must be checked during remapping. Depending on the level of tuning, the fuel injection, exhaust system, cooling system, the clutch or the gearbox may also require checking or adjustment. Fitting the turbo alone does not guarantee a power gain.
Turbo specifications
OEM part numbers
070145701N
070145701NV204
070145701NV210
Manufacturer part numbers
760699-0002
760699-0003
760699-0004
760699-5003S
760699-5004S
Compatible vehicles and roles
Volkswagen
Transporter T5 — 174 hp
2.5 TDI — from 2003, end date unspecified
Engine code: not specified
Additional technical specifications
Product type: Hybrid Turbo
Engine: 2.5 TDI
Power: 174 hp
Fitting period: From 2003
Installation: No modifications required
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 turbo’s part number 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 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 data sheet. An identical engine specification does not always guarantee compatibility.
If in doubt, contact ALFI TURBO with the part number found on your turbocharger.
