Thanks FIX94, and thanks to everybody else for the info so far.
I have dumped Mario Kart, merged the files, and used Uwizard to extract the game files.
These files work fine with Loadiine, but there are still a few things I am yet to understand.
How do I update the game?
How do I access my DLC?
How do I transfer my saves?
I used saviine to grab my saves (80000001 / common), which I copied to my SD card... H:\wiiu\saves\Mario Kart 8 [AMKP01]
But the game looks like it's never been played.
I've tried changing the save mode in Loadiine (Shared, Unique)
I have also tried my saves with a scene release (ABSTRAKT), and a Loadiine ready P2P dump, but still no joy.
When I dump with ddd, it seems to get the updated game files, and I also get a
save folder and the DLC
aoc0005000c1010ed00 folder.
This seems great, just what I am after, but the game doesn't actually work at all when dumped with ddd (black screen)
Hope somebody can help.
Thanks