CHIP TUNING · BYD
BYD chip tuning with Softechpro V5
Softechpro V5 supports the full range of BYD engine ECUs — diesel and petrol, OBD-flashable and bench-mode — covering DTC OFF, EGR OFF, DPF OFF, AdBlue OFF, Catalyst OFF, and Stage 1 / 2 / 3 tuning. Off-road and motorsport use only.
BYD ECU families supported
Common ECU families found across BYD Han · Tang · Yuan Plus · Seal engines:
Softechpro identifies the firmware revision automatically when you drop the BYD .bin / .ori / .hex / .s19 / .frf onto the workspace. Bench-mode files (MG1 / MD1 / MEDC17) are decrypted in place.
Services available for BYD
Each service patches the calibration directly in the bin file. The Softechpro patcher then recomputes the BYD-specific checksum (Bosch CRC for EDC15/16/17, Delphi sum, Siemens hash) so the file flashes back without integrity failure.
How to tune a BYD ECU with Softechpro V5
- Read out the BYD ECU via OBD or bench (KESS3, AutoTuner, MPPS, Trasdata, Flex, FRF flasher).
- Open Softechpro V5 and drop the .bin onto the workspace. Softechpro auto-identifies the BYD ECU family from the header / signature.
- Pick the service you need — DPF OFF, EGR OFF, AdBlue OFF, Stage 1-3, etc.
- Hit Save patched .bin. The checksum is recomputed automatically.
- Flash the patched file back via your existing flasher. BYD adaptation reset may be needed via the OEM scan tool.
BYD models in our catalog
Browse the full vehicle catalog for model + engine details.
Full vehicle catalog at /vehicles/byd with model + engine + ECU cross-reference.