Anyone know the size off the blanking plug I would need to get shot of my faulty dv??

[Audi S3 freak]

Hi people, as above really. Need to know the size so I can run a blanking plug until I get back from holiday. Don't worry this is just a temp thing until my service kit and new spring turns up! Current spring has become weak and is dropping boost. I'm able to get the plug in the morning so any help would I would be great. Cheers