I've got back from having it done and its awesome & scary - license looser. I reckon its somewhere in region of 260bhp (225 S3) Came down the slip road onto the M1 and I was doing 120 easily as I hit the motorway, saying that it loves V-power, so I think eventually it will get better on fuel as I realise its costing me a fortune. The characteristics are different to Revo, its a lot smoother, to some extent it retains the oem feel but with more power if you see what I mean & hopefully the clutch will last. I had the TIP fitted along with Hyperboost DV and Green Panel filter, the sound is awesome, its got more torque lower down with less lag and the power thru the quattro is unbelivable when you give it some pasty!! So far so good so watch this space & if anyone wants a test run in it - no problem but you can pay for fuel!!