I adjusted mine in the air-box to get the majority of the slack out, then fine tuned at the throttle adjusters.
Just leave a little slack and get them adjusted evenly.
No need to hook it up to a computer as long as you don't take all the slack out or do something stupid with the adjustment.
It's not rocket surgery.
'07 Aprilia Tuono
'07 Aprilia RXV 4.5
'07 KTM 990 Adventure
'09 Aprilia Mana