This is my before and after on the dyno. The torque has made a difference mainly for pulling away through traffic and on motorways etc. It is a different animal mapped. Just have it done and you wont regret it
Another vote here for John at Big Fish Tuning in Stokesley.
Mapped mine (remotely) whilst it was at MSL. Spent an age on it, but got it running exactly how it should be. The accelerator was basically an on/off switch beforehand, the difference is night and day and it's exactly how I want it now.