Description
This is an improved Honda CBR750 MM4, 511B1 ECU Replacement.
What is better compared to the original unit:
– increased protection against over-voltage (such as defect voltage regulator/rectifier, bad battery).
– higher resistance against a defective ignition coil and reverse battery connection.
– optimized ignition curve/map to improve engine performance resulting in more power.
– acceleration correction: when the RPM increases the ignition delay changes (in proportion) resulting in a smoother acceleration.
– digital technique: therefor the unit is more accurate and less sensitive to temperature changes.
– spark power control: the unit will change the output to the ignition coil when the battery voltage changes in order to keep the spark power the same.
– start mode: during engine start there is a start delay and the unit will give more current to the ignition coil for a faster start.
This ECU is used in the models below.
Please note that this (small) list is for reference use only.
We do our best to keep this up-to-date:
Honda CBR750
Honda CBR750 RC27
Honda CBR750F
Honda CBR750 Hurricane
Honda CBR750 Superaero
1988 1989 1990
On the box:
MM4, 511B1
Other names:
EC Ignitor, brain, ignition module
CDI, ECU, ECM computer, Black Box, Ignitor
ignition control module, spark box
Ignition Spark Control Module
CDI Ignition
Model: CARI-HO-CBR750-F-MM4-511B1 CDI
000.299.000 S120 45
