Description
This is an improved Yamaha XVS650A V-star J4T093 ECU Replacement.
What is better improved compared to the original unit:
– increased protection against over-voltage (such as a defective voltage regulator/rectifier, bad battery).
– higher resistance against a defective ignition coil and reverse battery connection .
– 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.
– optimized ignition curve/map to improve engine performance resulting in more power.
– 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’s 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 XVS 650A Dragstar Classic CDI
Yamaha XVS650A Dragstar CDI
Yamaha XVS 650A V-star Classic CDI
Yamaha XVS650A V-star CDI
On the box:
J4T093
71 5BN-10
J4T094
71 5BN-20
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-XVS650A-DRAGSTAR-V-STAR-J4T093-J4T094 XVS650A
000.299.000 S120 45
