And that's when the fun begins....
My Bufkin story started about 6 years ago after dropping the RS off for a MOT & casually mentioning to the garage guys, just as an afterthought, "Oh, while you've got her in, just have a quick look around for a minor coolant leak as I'm losing just a drop every few hundred miles or so, no biggie..."
Ended up 6 weeks later with a not insubstantial bill including new hybrid turbos, race dp's, new head gaskets etc. etc. coz, may as well when the engine's out innit...oh, and a 5 quid Bufkin pipe
I've heard rumours that Grizz at Unit 20 can change the pipe without an engine pull but it's a big ask.
Good luck