Hello everybody,

I am trying to tune a mates Polo with a 030906030D ecu. I havent desoldered the 27c512 plcc32, because the car isn't near me.
I managed to find a 030906030D file and i had a look.

My questions are:
When i change a few values, do i have to correct the checksum, so i wont have any starting issues?
What about immo, is it going to have different immo file in it?

Any ideas guys?

the easy way is to sync ecu to dash and car will start