I am going to start the process of "tuning" my ME5.9.2 ECU (99' Passat 1.8t AEB Stock). I say "tuning" because this is going to be a long learning process! At first I hope I can pull the data, define it, and understand the majority of it before well anything.. My understanding so far is I can flash my ECU from my obd port, but I am going to need a chip reader to read anything. Can anyone suggest one?

Forgive me if I'm bleeding Newbieness all over the place! I've been reading up over the past month well I've been doing some heavy work on my car. My lack of understanding so far is suggesting I really have to start looking at files to even have a hope of understanding anything. Even if I don't ever get a successful tune in my car I am hoping I can collect a lump of 5.9.2 info in one place for others.

I'll update this post will my progress as it happens.

My first goal is to be able to read the file on a stock ECU.

Question to anyone: Can I read with an MPPS interface or do I need to desolder the chip?

Awesome . I got a 1.8t AEB file for the 557P ECU (mine!) and it looks like someone was already quite busy mapping this ECU to. Its in german, but still really interesting. I have already found a lot of ignition timing maps.

MPPS write it, but cant read.