The ECUHELP KT200 II is confirmed to program the SID803A ECU of a Peugeot 807 via OBD, supporting reading, writing, stage 1 tuning, FAP off, and EGR off.

Writing Process:
This image demonstrates the 100% writing process with the KT200 II.
KT200 II Read Write SID803A Peugeot 807 via OBD

Conclusion:
The KT200 II ECU Programmer is a versatile and reliable tool for programming the SID803A ECU in the Peugeot 807 via OBD. It supports essential functions including reading, writing, stage 1 tuning, FAP off, and EGR off, making it an invaluable tool for ECU programming tasks.