Description
This is an improved Yamaha XV920 42X-20, J4T00872 ECU Replacement.
What’s 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:
Yamaha XV700 Virago CDI igniter ECU ECM
Yamaha XV750 Virago CDI igniter ECU ECM
Yamaha MIDNIGHT VIRAGO XV750 750 CDI igniter
Yamaha XV920 CDI igniter
1983 1984 1985 1986 1987 1988 1989 1990
On the box:
J4T00872
42X-20 (Mitsubishi)
OEM Code:
42X-82305-20-00
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-YA-XV700-XV750-MIDNIGHT-VIRAGO-42X-20-J4T00872 XV CDI
000.299.000 S120 45
