I've only owned my Saph for a couple of months but took it for it's first real drive this weekend, it did over 300 hard miles and went really well, didn't miss a beat and had a good few tear ups with M3's and the like!

Current Spec is:

Genuine 82k Miles 2WD
K+N Panel Filter
Scorpion Exhaust
T3 Hybrid Turbo
Bailey Dump Valve
14 Psi
Pectel Loom
Stage 1 Chip

Should be good for a solid 270bhp I reckon, touch wood not had any problems with it at all!