Originally Posted by 2011 STI SEDAN
Ok... Back from lunch now...
So, a Pro Tune is kind of "my car" car specific rather than an AP is just mass produced car specific...?
A OTS map that comes on the AP itself is a good tune that will work everywhere under many varying conditions, made to be safe.
A custom tune is custom for your car, how you drive, where you drive, whether you want full out power bragging or something with more area under the curve.