This right-hand-side hybrid turbocharger is designed for theAudi RS4 fitted with the 2.7T engine producing 380 hp. Its design plug & play enables Installation without modification, whilst its internal modifications are aimed at adapting the dair flow and the turbocharger’s compression capacity.
The three documented configurations combine a high-flow MFS compressor wheel, a 360° bearing retainer and high-speed balancing on a Cimat VSR bench.
Available configurations — Stage 1, Stage 2 and Stage 2+
Stage 1
Compressor impeller: High-flow MFS
Bearing system: 360° thrust bearing
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR balancing machine
This configuration retains a Installation without modification and utilises a high-flow MFS impeller to dadapt the compressor’s operation.
Stage 2
Compressor impeller: High-flow MFS oversized
d’ intake housing: Reprofiled 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
d’ intake casing is adapted to the oversized impeller. This combination may alter the air displacement capacity dand the compressor’s behaviour depending on the engine configuration.
Stage 2+
Compressor impeller: MFS high-flow oversized
d’ intake housing: Reprofiled for to 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
This configuration incorporates the mechanical modifications to the. documented above. The final result depends on the engine management system and other components associated with the tuning.
What is a hybrid turbo?
A hybrid turbo is based on a turbocharger architecture adapted for to accommodate internal components that differ from the doriginal configuration. Depending on the upgrade stage, the modification may involve the compressor wheel, its dimensions, the reprofiling of the housing, the thrust bearing or the balancing of the rotor.
The aim is dto adapt the compression and air flow d. However, a hybrid turbo is not defined solely by the appearance of its impeller: its geometry, its integration into the housing and the overall balance of the unit are crucial.
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. A standard MFS wheel can retain a geometry close to the original.
An MFS wheel Performance can be given a geometry tailored to the tuning objective, particularly through its profile, dimensions or blade configuration. On this product, the MFS wheel is described as lighter, larger and taller than the orig d, with an advertised 15 per cent increase in compression.
A standard MFS impeller can be just as effective 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 the arrangement of its blades influence its aerodynamic behaviour and the amount dof air displaced under certain operating conditions.
The result also depends on the compressor housing, the impeller and the turbine housing, the boost pressure and the. mapping. A larger impeller therefore does not automatically guarantee better performance and may alter the turbo’s response time.
Reliability and balancing of the hybrid turbo
The 360° stop present on all three stages helps to distribute the axial forces borne by the rotating assembly. It does not replace d’proper lubrication or d’correct installation.
Every documented modification undergo d’high-speed balancing at 150,000 rpm on a Cimat VSR test bench. This process aims to minimise vibrations and mechanical stresses on the rotor, without compensating for any faults d’installation or d’oil supply.
Engine remapping and preparation
Operating da hybrid turbo requires appropriate engine management. The mapping, boost pressure, injection, exhaust and cooling must be checked or adjusted according to the modification. The wastegate must be adjusted when reprogramming the ECU. The clutch, transmission and other components under load must also be checked depending on the vehicle.
Turbo part numbers
OEM part numbers
078145701F
078145701S
078145702M
078145704M
078145704MX
Manufacturer’s part numbers
53049700026
53049880026
Compatible vehicles and applications
Audi
RS4 2.7i — 380 hp
Engine: 2.7 l — from 2000, end date unspecified
Engine code: not specified
Additional technical specifications
Product type: Hybrid Turbo
Position: Right-hand side
Engine: 2,.,7T
Power of the vehicle: 380 hp
Documented period: From 2000
Installation: Plug & play, no modifications required
Installation advice
⚠️ WARNING — IMPORTANT BEFORE INSTALLATION
Identify and rectify the cause of the previous fault before dinstalling the turbo.
dCheck the lubrication circuit, the oil supply and return lines, and ensure the pipes are clean. Also check the intake for any foreign objects.
Prime the turbocharger in accordance with the applicable recommendations and follow the manufacturer’s instructions.
A lubrication fault that is not rectified may result in the turbocharger failing again.
How do you identify the correct turbo?
Check the part number marked on the original turbo d, the OEM and manufacturer part numbers, as well as the make, model, engine type, power output,Year and engine code.. An identical engine type may have several different turbo set-ups, and the right-hand side position must also be confirmed.
⚠️ 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, please contact us, providing the full part number from your turbo.
