This hybrid turbo for, with a 1.9 TDI engine, is available in three documented tuning levels.. Depending on the chosen package, it is fitted with a high-flow MFS compressor wheel, a dre-profiled intake housing and, in the most comprehensive package, a oversized turbine wheel with a modified housing.
Its installation without modification is documented at for; the specifications for the Volkswagen Bora and New Beetle models are listed below at.. To make full use of its performance characteristics, the engine must be tuned in a way that is consistent with and suited to the vehicle.
Available tuning options — Stage 1, Stage 2 and Stage 3
Stage 1
Compressor wheel: MFS high-flow
Thrust bearing: 360° bearing
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR test bench
This modification primarily affects the compressor section in order t d’s capacity to move and compress air. The result depends on the engine management system and all associated components.
Stage 2
Compressor impeller: MFS high-flow oversized
d’ intake housing: Reprofiled for accommodate the new impeller oversized
Thrust bearing: 360° 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 dintake housing adapted to the. This combination is designed to alter the available air flow d, without affecting the engine’s final power output.
Stage 3
Supercharger impeller: MFS high-flow oversized
Intake housing d: Reprofiled for to accommodate the new impeller oversized
Thrust bearing: 360° bearing
Turbine impeller: High-flow oversized
Turbine casing: Reprofiled for ly to accommodate the new impeller oversized
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR test bench
This modification alters the compressor and turbine sides. The adapted turbine impeller and housing can alter the turbocharger’s performance; however, the result depends on the engine’s overall configuration.
What is a hybrid turbo?
A hybrid turbo retains an architecture compatible with the intended installation whilst incorporating internal modifications. Depending on the modification, these may involve the impellers, their geometry, the housings, the thrust bearing and the balancing.
The aim is dto adapt the compression capacity and the air flow rate d. A hybrid turbo is not defined solely by the appearance of its compressor wheel: consistency between the components and their mechanical compatibility is essential.
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 a higher air flow rate: a standard MFS wheel may retain a geometry equivalent to that of the original d.
An MFS wheel Performance may feature a geometry tailored to the. The source sheet here describes an aluminium wheel that is lighter, larger and taller than the original d. 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 d’air.
Why does the geometry of the blades influence the air flow rate d?
The compressor impeller draws in and then compresses the air. Its diameter, profile, height, width and the arrangement of its blades influence its aerodynamic behaviour. A suitable geometry can move more d’air under certain conditions.
The result also depends on the housings, the turbine wheel, the boost pressure and the engine tuning. A larger wheel therefore does not automatically guarantee better performance and may alter the response time.
Reliability and balancing of the hybrid turbo
The documented 360° thrust bearing distributes axial forces over a wide surface area. The rotor is balanced at high speed, up to 150,000 rpm on a Cimat VSR test bench, to minimise vibrations and mechanical stresses.
This balancing does not protect the turbocharger against incorrect installation, inadequate lubrication or the presence dof a foreign object in the intake.
Engine remapping and preparation
Appropriate engine management is required for to make the most of the hybrid turbo’s characteristics. The mapping, boost pressure, injection, exhaust, intake air cooling dand the transmission must be adjusted according to the vehicle’s configuration. The wastegate must be adjusted when remapping the ECU.
dFitting a hybrid turbo alone does not guarantee an increase in power. The tuning must be carried out consistently by a competent professional.
Turbo part numbers
OEM part numbers
038 253 014F
038 253 016M
038253010J
038253014F
038253016M
038253056B
Manufacturer’s part numbers
54399700010
54399700021
54399800010
54399800021
54399880010
54399880021
54399900010
54399900021
Compatible vehicles and assignments
Volkswagen
Bora —1.9 TDI 100 hp
Engine variants: 1.9 TDI • Documented start: 1998 • endunspecified
Engine code : unspecified
Bora 4MOTION — 1.9 TDI 100 hp
Engine: 1.9 TDI • Documented start: 1998 • End unspecified
Engine code : unspecified
New Beetle — 1.9 TDI 100 hp
Engine: 1.9 TDI • Documented start: 1998 • End unspecified
Engine code : unspecified
New Beetle, Phase 2 — 1.9 TDI 100 hp
Engine: 1.9 TDI • Documented start: 2001 • End unspecified
Engine code : unspecified
New Beetle, Phase 3 — 1.9 TDI 100 hp
Engine: 1.9 TDI • Documented start: 2005 • End unspecified
Engine code : unspecified
Additional technical specifications
Product type: Hybrid Turbo
Engine: 1.9 TDI
Power: 101 hp in the title; documented allocations in the 100 series hp
Fitting: Installation without documented modifications
Motor codes: Not specified
Installation 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 lines and the inlet are clean and free from foreign objects. Carry out the priming procedure 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?
Compare the part number of the original turbo dwith the OEM and manufacturer part numbers listed on this sheet. Also check the make, model, generation, version, engine type, power output, production period and engine code where available.
An identical engine specification does not always guarantee compatibility, as there may be several different 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 data sheet. An identical engine specification does not always guarantee compatibility.
If you are unsure about identification or fitting, please contact us before ordering.
