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Which ECU Part Number should I choose?


Every vehicle ECU is unique to a specific vehicle and has a unique part number which allows us to identify which vehicle a particular ECU is for.  If you are going to write to the ECU using the WRT software it is critical that the correct part number is selected, writing the ECU with the wrong part number can damage the ECU permanently.
   
To determine which ECU Part Number (ie. which Bin File Definition) to use for your particular ECU 
  1. Connect your harness and Interface to the ECU
  2. Connect the Interface to your computer via USB cable
  3. Ensure the v3 Interface is in normal operation mode
    1. Switch should be in the right-hand side position
    2. The green LED will be on constantly while in an idle state.
  4. If using an older (eg. v2) device, put the device into 'Read/Write' mode
    1.  Switch should be in the right-hand side position
    2. The red LED will be ON
  5. In the WRT software select the menu "Tools" > "Read Part Number and Serial Number", this will read the ECU Part Number and Serial Number from the ECU. 
You will be able to see exactly which Bin File is in the ECU and use this Bin File as your starting point for further tuning.


Note: The Read Serial Number function is not available for all models of ECU, some of the Denso ECU's are not able to be read from the main ECU connectors, so the Read Part Number and Serial Number option is not available. If this is the case you can determine which ECU Part number to use by inspecting the Part Number on the ECU (see below).

There are usually several ECU Part numbers listed for a particular model of bike.
e.g. 
32920-21H50_DJ0HSE01
32920-21H50_DJ0HSE51

21175-0082_F569146E 
21175-0082_F569154E

The part number is made up of 3 sections:

Manufacturer Identifier: 
  • Suzuki: 32920-21H60_DJ0HSE00
  • Kawasaki: 21175-0082_F569146E 

ECU Part Number:
  • Suzuki: 32920-21H60_DJ0HSE00
  • Kawasaki: 21175-0082_F569146E 

Bin File Serial Number:
  • Suzuki: 32920-21H50_DJ0HSE00
  • Kawasaki: 21175-0082_F569146E

The Manufacturer Identifier and ECU Part Number are either stamped into the plastic case of the ECU or on a sticker on the ECU. The Bin File Serial Number is not visible externally, it is in the bin file inside the ECU.

NOTE: For some ECU's like BMW's, V4/V2 platform Ducati's, Harley Davidsons, and some new-generation Suzuki's like the 2021+ Hayabusa, 2021+ GSX-S 1000 and GSX-8S, the part number can only be found by using the software to check the part number. 
For BMW and Harley Davidson ECU's, you must use a readout file from the ECU as the basis for flashing the ECU. You cannot flash a stock file opened directly from WRT. 



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