oh right.

id just thought injection duration.. would be like f(act) x f(revs) x f(map) x f(coolant temp) = postion to lookup in injector duration table

and if f(map) was at the maximum then you could perhaps write the chip so that the other functions are increased to compensate or something? or something along those lines?

it wouldnt compensate for the pressure but I would of thought that there would be someway around it?