Air spring replacement question

[bazz780]

Hi guys, fantastic forum to join after selling my e90 335d m sport and buying a 55 2005 plate 3.0d x5 sport

I have noticed that the passenger side rear is always dipped down in the mornings and when i unlock door and jump into the car the suspension rises and can hear the compressor doing its job.

After a lot of reading i learnt that the air spring is the prime suspect and so i ordered the arnott bags to replace with

Its pretty straight forward to replace but my question is how important is it to use a program to refill the airbags? Did anyone refill or just simply let the car do it itself? Any one had any problems by not refilling with software?

Any help appreciated

Thanks