I still suggest installing the OEM PCV. The front PCV works when idling, and the rear one works when under boost.
Your valve stem seals can fail at any point after 2 years, so I'd do the easier option first by re-fitting the OEM front-PCV. Have you done any compression testing recently?
Are you saying that someone could flash the Edition 30 file to a K03 GTI, and the ECU is NOT bricked?
If so, I'd be curious to try getting a hold of the Edition 30 Eurodyne file to import the individual tables in my GTI with F23T and S3 injectors
To get this, it is important to select the option to "license your vehicle on Maestro", and not the option that is listed.
This will ensure you get ALL files for your car, and not just the 2 default basemaps. I learned this the hard way and had to buy 8 credits twice (to get Maestro the second...
Yes, you can simply overwrite your existing GIAC tune with a Eurodyne basemap without issues. However, do not READ your GIAC map, and send it to Eurodyne (like you would do with a stock ECU). This would result in them making changes on top of the GIAC map resulting in possible engine damage...