Air intake manifold swollen with air
Guys, I got a strange one. Whenever I push the gas quickly I hear a hissing sound and it looks like the air intake fills with too much with air (don't think that's normal). It's really hard to describe in words but a video tells the whole story :)
https://youtu.be/GrMa46DahYI
The car is European (Seat Toledo - 2002) but the engine is the same one as you have on the VW Golf 2.3 V5 170 bhp