This hybrid turbo is available in three documented performance levels. Each version is fitted with an MFS compressor wheel Performance high flow rate, a 360° bearing stop and high-speed balancing on a Cimat VSR test bench.
It is intended for Bmw 5 Series E39 and 7 Series E38 with the engine types and power outputs listed below. Its design plug & play allows for mechanical fitting without any modifications to the vehicle, provided that the part number is checked carefully d’origin’.
Available products — Stage 1, Stage 2 and Stage 2+
Stage 1
Compressor wheel: MFS Performance high-speed
Dimensions: 41.52 / 56.02 mm
Blade configuration: 11+0
Level: 360° stop
Balancing: up to 150,000 rpm on a Cimat VSR test bench
This assembly incorporates an MFS compressor wheel Performance with a 360° stop. Its geometry is designed to adapt the range of movement d’compressor air, although no precise increase in power can be deduced from these characteristics alone’.
Stage 2
Compressor wheel: MFS Performance high-speed oversized
Dimensions: 44.52 / 60.00 mm
Blade configuration: 11+0
Carter d’Admission:’ reprofiled for to receive the wheel oversized
Level: 360° stop
Balancing: up to 150,000 rpm on a Cimat VSR test bench
The Stage 2 uses a larger impeller and a casing d’the intake, reshaped accordingly’. This combination may affect the flow rate d’air and the compressor’s behaviour; the result also depends on the engine configuration and its settings.
Stage 2+
Compressor wheel: MFS Performance high-speed oversized
Dimensions: 48.30 / 63.00 mm
Blade configuration: 11+0
Carter d’Admission:’ reprofiled for to receive the wheel oversized
Level: 360° stop
Balancing: up to 150,000 rpm on a Cimat VSR test bench
This version has the largest wheel of the three documented configurations, with a casing d’adapted admission’. A larger size does not automatically guarantee a better result in all conditions and may affect the turbocharger’s response.
What is a hybrid turbo ?
A hybrid turbo retains a suitable turbocharger design for to receive modified internal components. Depending on the specific modification, changes may relate to the compressor impeller, its dimensions, the geometry of the blades, the casings, the turbine impeller, the thrust bearing system or the balancing.
The aim is d’adjust the compression capacity and flow rate’ dair. A hybrid turbocharger is therefore not defined solely by the appearance of its compressor wheel, but by the consistency of its components and the machining processes carried out.
MFS compressor wheel: standard or Performance ? ?
MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. This manufacturing process does not, on its own, guarantee an increase in throughput dair. A standard MFS wheel can retain a geometry equivalent to that d’origin’.
An MFS wheel Performance may have a geometry suited to the intended purpose, in particular a specific profile, dimensions or blade configuration, where these features are documented.
A standard MFS wheel can be just as shiny as an MFS wheel Performance. It is not its appearance that determines its performance, but its geometry and its ability to move more dair. A higher flow rate can help to generate more power, but only if the engine has been properly prepared.
Why does the geometry of the blades affect the flow rate? d’air ?
The compressor wheel draws in and then compresses the air fed to the engine. Its diameter, profile, height, width and the arrangement of the blades all influence its aerodynamic behaviour. The right geometry can move more dair under certain operating conditions.
The result also depends on the compressor housing, the impeller and the turbine housing, the boost pressure and the engine tuning. A larger wheel does not automatically guarantee better performance and may affect response time and range doptimal use.
Reliability and balancing of the hybrid turbocharger
The 360° stop fitted to all three stages helps to distribute the axial forces around the axis. However, it does not exempt one from either d’proper lubrication nor d’a compliant installation’.
Every preparation benefits from d’high-speed balancing up to 150,000 rpm on a Cimat VSR test bench’. The aim of this operation is to minimise vibrations and mechanical stresses on the rotor, without compensating for a fault d’installation, lubrication or doil supply.
Engine remapping and tuning
It may be necessary to adjust the engine management system for make the most of the hybrid turbo’s features. Depending on the stage of preparation, it is advisable to check the mapping, boost pressure, fuel injection and air cooling dthe intake, the exhaust, the clutch or the transmission.
The wastegate must be adjusted during the installation and remapping of the ECU. The hybrid turbo alone does not guarantee a power increase without tuning and suitable ancillary components.
Turbo part numbers
OEM part numbers — Bmw
2247691H
2247691F
2247691G
2248907G
2248907H
22489079
2248906G
2248906H
11652248906
11652248907
11652247691
116522489079
11652247691F
Manufacturer’s part numbers
454191-0001
454191-0003
454191-0004
454191-0005
454191-0006
454191-0007
454191-0008
454191-0009
454191-0010
454191-1
454191-10
454191-3
454191-4
454191-5
454191-5012S
454191-5015S
454191-6
454191-7
454191-8
454191-9
Compatible vehicles and assignments
Bmw
530 E39 3.0 D — 184 hp
Engine 3.0 D — from 1998, end date unspecified
Engine code : not specified
530 E39 3.0 D — 193 hp
Engine 3.0 D — from 1998, end date unspecified
Engine code : not specified
730 E38 2.9 TD — 184 hp
Engine 2.9 TD — from 1998, end date unspecified
Engine code : not specified
730 E38 2.9 TD — 193 hp
Engine 2.9 TD — from 1998, end date unspecified
Engine code : not specified
Additional technical specifications
Product type: hybrid turbo
Installation: plug & play, without making any mechanical alterations to the vehicle
Documented engine specifications: 3.0 D and 2.9 TD
Documented power ratings: 184 hp and 193 hp
Period covered: from 1998 onwards
Assembly instructions
⚠️ WARNING — IMPORTANT BEFORE ASSEMBLY
Identify and rectify the cause of the previous fault before d’fit the turbocharger’. Check the lubrication circuit, the supply and the return d’the oil and the cleanliness of all the pipes’.
Check the intake and ensure there are no foreign objects. Carry out the priming in accordance with the relevant guidelines and follow the manufacturer’s instructions. The wastegate must be adjusted during fitting and remapping.
If a lubrication fault is not rectified, it may lead to the turbocharger failing again.
How do you choose the right turbo ?
Check the part number marked on the turbocharger d…the original and compare it with the OEM and manufacturer’s specifications in this data sheet. Also check the make, model, generation, engine type and power output in hp, theYear installation details and, where available, the engine code.
An identical engine does not always guarantee compatibility: there may be several different configurations depending on the vehicle and its production period.
⚠️ Check your turbo’s part numbers
Before placing your order, Compare the part number on your turbocharger d’origin’ using the references given in this fact sheet. Having the same motor does not always guarantee compatibility.
If you are in any doubt, please contact us, quoting the reference number clearly visible on your turbocharger.
