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Experience
Once you experience our nice waiting areas, flat screens, espresso machines and a large viewing area of our service facility, GT-Service will soon become your only choice for Ferrari, Maserati, Lamborghini, Porsche and Aston Martin Bentley Service and Repair. GT-Servis Istanbul is now offering full service for all GT models, all services are performed by a Ferrari Factory trained Workshop Service Engineer with more than 10 years of automotive Service experience. Serkan Ozsavasci is also an ASE advanced master technician.

In GT-Servis Istanbul we are rebuilding, F1, E-Gear, SMG, Sport shifting and all Magneti Marelli Selespeed Actuators.
We in Gt-Servis Istanbul have the knowhow and training from Ferrari SpA the factory in Maranello…
New F1 shifting system (Magneti Marelli Selespeed) costs up to 14,500 Euro!!!
If you have:
You need to send your Actuator (the all system is recommended for a complete checkup) to get it rebuild for the fraction of the new prices...
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Selespeed:
Automated Manual Transmission (AMT, also known as Selespeed) from Magneti Marelli is a mechanism for automating manual transmission which derives from Formula 1. It combines comfort of use with a reduction in consumption.
It allows the driver to change gear without using the clutch, either sequentially or fully automatically.
The device from Magneti Marelli operates on the manual transmission of a car in the same way as the driver would: it opens and closes the clutch, engages and disengages the gears and, when necessary, it also controls the choice of transmission (automatic or sequential mode for changing gear).
The heart and intelligence of the gear control system is the TCU (Transmission Control Unit).
Taking into account the driver’s requirements and the operating conditions of the vehicle, it manages the gear changes by controlling the clutch, the gears and the engine.
The fact that it is well coupled with the engine control means the AMT is able to ensure less consumption than a car with manual transmission: lower consumption also means lower emissions, especially of CO2.
The latest generation of AMT is known as “mechatronic”, as for the first time, it combines the electronic control part and the hydraulic actuation part of the transmission in a single kit.
This allows considerable improvements to performance, both in terms of speed and comfort when changing gear.
In addition to Selespeed having been installed in numerous small and medium cylinder vehicles, versions of the robotized transmission have been installed in several supercars such as Ferrari, Lamborghini and Aston Martin...
Manumatic (such as 'Tiptronic', 'Geartronic', 'Touchshift', 'Sporttronic', 'clutchless-manual' and others) is not a Magneti Marelli Selespeed system!
MANUAL TRANSMISSION AUTOMATED
Magneti Marelli’s SELESPEED Manual Transmission Automation system was first developed for Ferrari Formula 1 racing in 1986. It uses an electronic Transmission Control Unit (TCU), interfaced by CAN bus to the Engine Control Module, to actuate the gear shifting of a traditional mechanical transmission, either transversal or longitudinal. The actuators are hydraulic and can be simple add-on hardware for an existing transmission, or can be integrated onto the transmission.
ADVANTAGES
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Over an Automatic Transmission |
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Less mass - estimated 35 lb. reduction |
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Higher efficiency / fuel economy improvement of approximately 10% |
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Improved vehicle performance |
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Higher torque capacity |
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Fun to drive |
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Over a Manual Transmission |
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Improved vehicle control |
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Optional shift modes such as Manual, Sport, and Automatic for city traffic conditions |
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Fuel economy gains |
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Transmission and clutch life improved |
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MTA can augment other systems |
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Safety |
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Driver tutoring function avoids transmission control errors |
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Driver is free to give full attention to road and traffic conditions |
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A variety of driver
interface options are possible, depending upon the vehicle type (Sporty,
Commercial, etc). Current applications include paddle shifters behind the
steering wheel, button shifters on the wheel, and traditional stick shifts.
Functional Block Diagram
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SELESPEED is known by various names, according to the manufacturer’s preference - all of these systems demonstrate Magneti Marelli’s high level of performance and reliability. |
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Selespeed Evolution -
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Targets: |
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Avoid driveline oscillations and shocks |
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Reduce as much as possible the torque hole ( ‹ 90 ms) and the total gear shift time (‹ 240 ms from gear shift request to full traction at wheel) |
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Satisfy customer specification in terms of gearbox actuation limits (effort, maximum actuation speed) |
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Key Features: |
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Clutch position control - quick, precise, and repeatable |
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Engine torque control - precise and repeatable |
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Optimized disengagement time (in order to match driveline torsional oscillation) |
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Actuator speed control on synchronizer approach |
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Engine speed control - precise and repeatable |
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SOFast Control Strategies in the Mechatronic Integrated Unit |
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Reduced number of electric connectors |
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Reduced number of hydraulic connectors |
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Easy integration of the kit into the gearbox |
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Installation and testing of actuation system on gearbox production line |
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Autocalibration functions of the hydraulic components at supplier line |