With the VAG DCM6.2V, the virtual read and OBD write with automatic checksum correction worked flawlessly. For PSA SID807/807Evo, the OBD real read and write with checksum correction also worked perfectly. So far, the KT200 II has been working great with OBD protocols.
 

I've tried a few ECUs via OBD—V50 Valeo and SID807Evo worked perfectly, and a 2016 C4 Grand Picasso (I don’t remember the exact ECU) also worked good. The KT200 II is a great ECU programmer.
 

I have the KT200 II from ECUHELP, and so far,  it’s been working great. I've done more than 20 ECUs, and works well. You do need a powerful, high-quality lab power supply, but that's true for all ECU programmers. I really like the KT200 II's bench mode—it's really helpful and often reduces the time needed for reading/writing.
Note: So far, I’ve only worked on table (bench mode, boot mode) and haven’t tried OBD yet.
 

 I believe the KT200 II is the best tool for its price. I've done around 40 ECUs without any issues. My KT200 V1 bricked one ECU, a Delco E98, but I later discovered the problem was due to the power supply. After switching to a lab power supply with stable voltage, all worked perfectly.
 

I have the KT200 II online version and read/write about 50-60 ECU. All work perfect. 

 

So far, I haven't encountered any ECU that the ECUHELP KT200 II couldn't read or write. For instance, with the Volvo EDC15C11, neither the Galletto V54 nor Ktag could read it, but the KT200 II worked like a charm. The documentation and manuals are clear and easy to understand. It was my best purchase last year.
 

Dcm 3.5 Peugeot, already make a few by obd no issue, also boot mode ok.
 

KT200II READ AND WRITE JEEP RENGADE EDC17C69 on BENCH, ALL OK

Mercedes benz e220 cdi 2006 edc16c2
r/w ok on bench 
Cheksum by tool ok
KT200 II is a good tool.

Bmw f10 520d edc17c41
R/W bench mode, with 14.5v power supply
Checksum by tool 

Dcm 3.5 Peugeot, already make a few by obd no issue, also boot mode ok. KT200 II is nice.

Citroën c3 1.2 gasoline
Valeo v46.11 ecu
Read write via obd
KT200 II is a great tool

2014 mercedes benz vito van
ECU Bosch EDC17C66 
Read/ Written/Checksum Ok
Voltage 14.50
Ampere 5 very important

Sid 307 Renault megane obd kt200 reading writing chs OK egr dpf.

KT200 II R/W Jeep Grand Cherokee continental GPEC2 on Bench.

KT200 II reads/writes one ME9.0 on Bench without soldering.

EDC15Ps In full system they do it very well don't even need to open anything tonight and reading/writing is fast.
 

Citroen C2 1.4 hdi Siemens SID806  read/write/ck by kt200II
Made on full system without the bench box

Dcm3.7 seat is safe to read/write with kt200 via obd.

Audi Q5 3l TDI Quattro EDC17cp14 Bench mode
Read and write Bench mode ok
CKS by the tool
using kt200II