TechII allows you to calibrate the steering angle sensor, crank position sensor. PPS (Passenger Presence Sensor). It will also allow you to program the SDM (airbag control module) to the vehicle, set the VIN number in the stock radio.. There is a plethora of things you can do with TechII that you cannot do with HPT.If you buy a really expensive scan tool made by one of the big tool companies you can also get those features, $3000.00 - $5000.00 vs $100.00... I'll go with the $100.00 option.