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NIStune Type 1 Hardware Installation Page 5 of 5
WARNING
If your ECU pulses the fuel pump, injectors, fuel regulator, flashes LEDs randomly (or they
just stay on when they shouldn’t) or your engine does not start then your ECU may not
have your board fitted correctly.
Testing has shown on early Nissan ECUs that this can potentially keep the Mass Airflow
Meter heater element on longer than 1 second and blow it like a fuse.
Check:
• Poor connection between the NIStune board and ECU due to failure to secure the
board correctly using hot glue or similar mechanism
• Poor header cable connection to the ECU from NIStune board
• Mismatched NIStune board configuration for the ECU image you are attempting to
use
How to fix this:
• Always firstly try ECU with the factory ROM without the NIStune board to attempt to
start the car properly
• Ensure your NIStune board has the correct base ROM image loaded for your ECU
• Ensure your solder joints are good and header connector is installed correctly
• Attempt USB Consult connection to the NIStune board to verify communication
The NIStune diagnostics document covers problem diagnosis in more detail