BOV QUESTION - need help right away

I am getting ready to install my new BOV. My friend said that it could cause issues if i put it as VTA as opposed to recirculation .

has anyone that has put an aftermarket BOV on had any "tuning" issues or "special tuning" needed to funtion properly and safely ?

i do not want to cause harm to the engine, obviously. please let me know if you've heard of any issues that could arise from just switching out the BOV without doing any computer "tuning"

thanks