Having read many forum posts on this topic I decided to disable the egr on my 2000 Mk1 Tdi 110bhp 150k miles by blocking/disconnecting the vaccuum pipe to the egr. The heavy smoke I used to get under strong acceleration has mostly disappeared, which was my main concern. It may be my imagination but I would say the engine runs a little quieter and with a touch more power / free-revving (for a diesel!), I haven't yet noticed any fuel consumption improvement but I've been gunning it a bit since the mod. The warm tickover has increased from 900rpm to 950. If anything further happens, I'll add here.
