Ive just brought a mk1 octavia vrs.A couple of times iv drove it iv had boost problems. Basically if it starts and has boost its fine for the journey, but a couple of times now its not boosted through the whole journey, this morning i drove the misses to work and no boost, turned it off then back on 5 secs later and boost was back.

Sounds like it's going into limp mode.

I'm in Hinckley with VCDS if that's any help??

Iv booked it into midland vw now, thanks for replying to my post though. midland vw says it sounds like a n75 valve, but want to plug it in the diagnostics first to be sure