I had limp mode brought it to a dealer and had a live VAS test done, they couldn't get it to replicate but was P0234 overboost condition something to do with the N75 valve, car goes into limp mode to protect the turbo sounds like your dealer is a conman if they need the car all day and lets hope he doesn't intrude anally as you have suggested he might nasty nasty, did the car exit limp mode with an ignition cycle or is it permanent also hope you reached the ton on a runway and nice work swapping a beetle for a gti you won't regret it at all it's a great car sorry we're taking the piss a bit but nobody can be arsed reading poorly abbreviated posts as life is too short so we're trying to help really by taking the piss if you know what I mean