Need Help in Choosing the Right Multiplexer

[Sherbo]

Can anyone help me with choosing a multiplexer for the VW group, I need to modify the ECU on a Golf 7.5?

 

[gtservice]

What do you want to do and what ECU do you want to code?

 

[vdiag3]

When you mean "modify", do you mean coding? Flashing?

 

[Bogov]

What kind of ECU is it, Simos 19? CMD, flex. If Simos 19.2 then there is no flex.