A big thank you to Dave at PDT for arranging the map, and also to Tim, Andy & Alex @Storm Developments in Reading, who spent a lot of time and effort today sorting my car out.
I'll do a proper write up once I've driven it extensively, but suffice to say I went in with 177bhp at the fylwheel, an engine warning light, split DV and 158lb/ft torque, and left 5 hours later with a Rev D diverter valve fitted, 239bhp and 250 lb/ft torque. An increase of 62bhp and 92 lb/ft! The acceleration is superb, pulling hard in all gears, and feels genuinly quick now. But what got me was the diesel-like torque when pootling along on the motorway in 6th, and putting my foot down, and it just flies!