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# Overview of CAN usage and IDs used by rusEFI
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Note: We support OBD2 pretty much exclusively for gauges/dashes/apps/etc, not real diagnosis!
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* rusEFI WBO two way communication [0xEF50000 ](https://github.com/mck1117/wideband/blob/master/for_rusefi/wideband_can.h ) 0x190
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* rusEFI WBO bootloader
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* rusEFI gauge broadcast 0x200 default base see [DBC ](https://github.com/rusefi/rusefi/blob/master/firmware/controllers/can/rusEFI_CAN_verbose.dbc )
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* rusEFI vehicle specific communication
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* rusEFI ECU bootloader OpenBLT TX 667h, RX 7E1h
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* rusEFI CAN GPIO
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* rusEFI [TS over CAN ](TS-over-CAN ) 0x100 0x102
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* rusEFI GDI comms [0xBB20 0xBB30 ](https://github.com/rusefi/libfirmware/blob/master/can/can_common.h )
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* rusEFI bench test protocol 0x770000
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## Software
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[Man-in-the-middle ](Man-in-the-middle )
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## Hardware options
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[PCAN-USB ](https://www.peak-system.com/PCAN-USB.199.0.html?&L=1 ) with some cable [PCAN-Cable OBD-2 ](https://www.peak-system.com/PCAN-Cable-OBD-2.273.0.html?&L=1 ) or [PCAN-Cable 3 ](https://www.peak-system.com/PCAN-Cable-3.290.0.html?&L=1 )
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[fake looking like Vasya ](https://rusefi.com/forum/viewtopic.php?f=13&t=2243 )
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[custom China ](https://rusefi.com/forum/viewtopic.php?f=13&t=2209 )
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[Korlan instructions ](https://rusefi.com/forum/viewtopic.php?p=43654#p43654 )
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FW images & legacy PCAN driver see < https: / / github . com / rusefi / rusefi_external_utils / tree / master / CAN >