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For the secondary injection to work successfully there are two CAN packets involved, one sent from the ECU to the secondary injection driver and another that is sent back from SI driver to the ecu. This may be subject to change or addition in future.
RaceROM Can Input (received by the ECU from the device)
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Byte | Name | Scaling |
1 | Version (4 bits) Multiplex (4 bits) | Fixed Value. Currently 0x11. |
2&3 | Pulsewidth Target (16 bit Big Endian) | 0.01 ms/bit. |
4&5 | Aux Output 1 (16 bit Big Endian) | unscaled0.1% per bit |
6 | Aux Output 2 (8 bit) | unscaled1% per bit |
7 | Injector Enable Mask (8 bits) | 1 bit for each injector, 1 = ON |
8 | Checksum (8 bit) | CRC8 algorithm |
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