INTAKE AND EXHAUST CONTROL
AND ENGINE MANEGEMENT SYSTEM
3) More Precise Engine Management
(1) ECM (Engine Control Module) Capacity
The new GSX-R1000 has an upgraded ECM (Engine Control Module).
The ECM includes four sections: the CPU (Central Processing Unit), the ROM (Read Only
Memory), the input section and the output section.
Sensors send signals to the input section, which sends the signals to the CPU. The CPU
calculates the injection volume by referring to data (in the form of fuel injection programming
maps) stored in the ROM and sends the injection-volume signals to the output section. The output
section sends operational signals to each injector.
The calculation capacity of the CPU is increased from 16-bit on the 2002 GSX-R1000 to 32-bit on
the new GSX-R1000.
The upgraded CPU calculates injection volume more quickly and thus in more detail, especially at
high engine rpm.
The memory capacity of the ROM (read-only memory) has also been increased, from 96 kilobytes
to 256 kilobytes.
The upgraded ROM is able to handle more detailed fuel injection maps.
These improvements make fuel injection more precise and more accurate at all rpm ranges,
resulting in more complete, more efficient combustion and thus improving engine output and fuel
efficiency as well as reducing exhaust emissions.
ECM
2003 GSX-R1000
2002 GSX-R1000
CPU
32-bit
16-bit
ROM
256 kilobytes
96 kilobytes
Intake and Exhaust Control and Engine Management Systems
3-12
ECM (Engine Control Module)
