Dme Control Unit - Porsche 911 GT3 Cup 2018 Techical Manual

6.4.1 DME control unit

NOTE
HINWEIS
The Bosch MS 4.6 NG control unit is installed in the rear section of the passenger side.
The wiring harness leads through an electrical connection directly to the engine. The
911 GT3 Cup (991 II) is equipped with the engine control unit Bosch MS 4.6 NG that
has been developed specifically for use in motorsports. The controller can be
programmed using a special software and also offers the possibility of error diagnosis.
Device programming is carried out exclusively at Porsche Motorsport. The online Error
diagnosis functionality is only available for the engineers of Porsche AG. If an engine
overhaul is to be performed at Porsche Motorsport, the corresponding engine control
unit has to be sent with the engine. On one hand, this ensures safe operation on the
engine test bench; on the other hand, the engine lifetime counter in the ECU can be
reset immediately after overhauling the engine.
The MS 4.6 NG provides the following functions:
Cylinder bank-selective lambda control

Pit lane speed limiter

 Ignition cut for power shift with sequential gearbox
 Asymmetric injection and ignition control
 Knock control
 Electronic throttle system and blipper function
 DFI control
 Control of intake and exhaust camshaft adjustment
Version: 4/20/2018
Voltage peaks
Damage to the control unit
 The control unit must be disconnected from
the wiring harness before welding work is
carried out.
 The battery must be disconnected before
the control unit is removed.
Electrical system
911 GT3 Cup (991 II)
MY 2018
319