I just purchased a hp tuners MPVI std and a new win 8 laptop. To make things simple I had the tuning shop pick up the hp tuner and dropped off my laptop and my car computer for him to install software and set me up with a 3bar OS in speed density with a 4l80e, 365 9.3 cr afr 225 heads z06 cam twin gt3582r turbos. he had a bit of trouble with the windows 8, but returned the laptop and tuner, with the 3bar in it. there are no credits left on my cable. how many credits would this use? thanks