When I tested a 300 4drive you could get farts in Cupra mode (didnt test sport) as you said under light load and in the highers revs. The car I tested only had 100km on the odoAs I was driving to work today I experimented with the dsg farts for a bit, and I managed to get it to fart several times in a row. Here's how I did it:
If I can reproduce it again this afternoon I may just make an attempt to record it from inside the cabin.
- Make sure the engine's hot (oil temp > 95C)
- Get into Sport mode (may also work in Cupra, haven't tested), and gearbox in manual
- Shift 1st to 2nd under low load (I'd say max 20% throttle) at about 3-4k rpm