This hybrid turbocharger for, available with Smart engine specifications, is offered in two documented tuning levels.. Its design combines a high-flow MFS Performance compressor wheel, a 360° bearing retainer and high-speed balancing to dadapt the turbocharger’s capabilities to a consistent engine tuning programme.
The upgrades apply to several Smart City-Coupé, Fortwo and Roadster models from the 450 and 452 series, with power outputs of 50 or 61 hp depending on the version.
Available tuning packages — Stage 1 and Stage 2
Stage 1
Compressor wheel: MFS Performance high-flow
.Documented dimensions: 22.47 / 38 00 mm
Blade configuration: 6+6
Bearing stop: 360°
Balancing: high-speed at 150,000 rpm on a Cimat VSR test bench
This modification utilises an MFS compressor wheel with a high-flow geometry. It is designed to alter the compressor’s air displacement capacity dwhilst retaining a configuration designed for for an external Installation without modification. Its operation must remain compatible with the engine management system and the vehicle’s peripheral components.
Stage 2
Compressor impeller: MFS Performance high-flow oversized
Documented dimensions: 27,.,00 / 40,.,00 mm
Blade configuration: 6+6
Intake housing d: re-profiled for accommodate the new impeller oversized
Bearing stop: 360°
Balancing: high-speed at 150,000 rpm on a Cimat VSR test bench
The Stage 2 combines a larger impeller with a reprofiled intake housing d. This modification may promote a higher air flow rate dunder certain conditions, but it may also alter the turbocharger’s response. The result depends on the overall engine tuning.
What is a hybrid turbo?
A hybrid turbo features a turbocharger design adapted for to incorporate internal components or machining that differ from the standard configuration. Depending on the modification, changes may relate to the compressor wheel, its dimensions, the geometry of the blades, the housings, the thrust bearing or the balancing.
The aim is dto adapt the compression capacity and air flow dto the requirements of the tuned engine. A hybrid turbo is therefore not defined solely by the appearance of its compressor wheel: the consistency between the components, machining and settings is 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 air flow d. A standard MFS wheel may retain a geometry equivalent to that dof the original.
An MFS impeller Performance has a geometry selected according to the tuning objective. Its profile, dimensions or blade arrangement can be adapted where these characteristics are documented.
A standard MFS impeller can perform just as well as a custom- Performance d MFS impeller. It is not its appearance that determines its performance, but its geometry and its ability to move more d’air. A higher airflow can enable the engine to develop more power, provided the engine is properly prepared and tuned.
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 dair within certain operating ranges.
The result also depends on the compressor housing, the turbine section, the boost pressure and the engine set-up. A larger impeller does not automatically guarantee better performance and may alter the response time as well as the range dof optimal operation.
Reliability and balancing of the hybrid turbo
The documented 360° thrust bearing distributes axial forces over a wide surface area. It helps the bearing system adapt to the stresses of the engine modification, without making the turbo immune to poor lubrication or incorrect installation.
The rotor is balanced at high speed, up to 150,000 rpm, on a Cimat VSR test bench. This process aims to minimise vibrations and mechanical stresses during rotation.
Engine remapping and preparation
The operation dof a hybrid turbocharger may require adjustments to the engine mapping and boost pressure management. Fuel supply, exhaust, cooling, intake and transmission must also be checked or adjusted depending on the level of tuning.
The wastegate must be adjusted during installation and when reprogramming the ECU. The hybrid turbo alone does not guarantee a power increase without appropriate engine configuration.
Turbo part numbers
OEM part numbers
1600960999
A1600960999
A160 096 0999
Manufacturer part numbers
727211-0001
727211-5001S
Compatible vehicles and configurations
Smart
City-Coupé (450) — PC — 61 hp
Essence • Jan 2003 to Jan 2004
Engine code : M 160.920
Fortwo Cabrio (450) — PC — 61 hp
Essence • Jan 2004 to Jan 2007
Engine code : M 160.920
Fortwo Coupé (450) — PC — 50 hp
Essence • Jan 2004 to Jan 2007
Engine code : M 160.920
Fortwo Coupé (450) — PC — 61 hp
Essence • Jan 2004 to Jan 2007
Engine code : M 160.920
Roadster Coupé (452) — PC — 61, hp,
,Essence • June 2003 to November 2005
Engine code : M 160,.,922
Additional technical specifications
Product type: Hybrid Turbo
Engine: 0.6i petrol
displacement: 0.6 l
Documented power outputs: 50 and 61 hp
Engine codes: M 160.920, M 160.922
Documented production periods: 01/2003 to 01/2007 depending on application
Fitting instructions
⚠️ WARNING — IMPORTANT BEFORE INSTALLATION
Before installation, identify and rectify the cause of the previous failure. Check the lubrication circuit, the oil supply and return d, the cleanliness of the pipes, as well as theintake, and ensure there are no foreign objects present. Carry out priming in accordance with the applicable recommendations and follow the manufacturer’s instructions. The wastegate must be adjusted during fitting and remapping. An uncorrected lubrication fault may result in further turbocharger failure.
How do you identify the correct turbo?
Check the part number engraved or marked on the original turbo d, then compare the OEM and manufacturer part numbers.. Also check the make, model, generation, body style, power output at hp, production period and engine code.. An identical engine specification 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 specification sheet.. An identical engine specification does not always guarantee compatibility.
If you are unsure about the identification or fitment, please contact us with the full part number of your original turbo d.
