When you guys remove the pre and/or post injection event, are you compensating by increasing duration on the main pulse?

Bear with me. I just got my EFILive 2 days ago and haven't flashed my ecm (or ECU, PCM, whatever we want to call it) yet because I'm wanting to fully understand my plan of attack on the tuning. I'm used to gasoline vehicle tuning with HPTuners, so I have some good base knowledge, but as yet it's my first run with EFILive and with a diesel. Thanks for the help.