Boost Adjustment

[videoatari]

Hi Folks

I know you are far more knowledgeable than me illyme: were or could you tell me the what the Boost Adjustment (atmospheric pressure adjustment at sea level) is for a 2007 1.6 HDi cratch:

I have got myself a Bluetooth adapter and the Torque App for smartphones

While this isnt needed to get the 90% of this working this is the only setting I couldnt find and would be good to have it completed, any Idea?