I bought MPPS V18 interface.
I tested it with a variety of ECU and it works very well.
All the tested ECU without problem reads and writes.
If you want I can put videos of these tests.
I was programming different drivers EDC15, EDC16u1, EDC16u31, EDC16u34, EDC17cp14i EDC17cp20.
Below link to the video Mpps v18 Correctly reads EDC17cp14 in Bootmode:
I added also reviews with a link to the video:
and MPPS V18 how-to guide: http://mpps-v18.blogspot.com/