How hard are DE days on cars?
 

I have an 87 Carrera and had been going back and forth about selling it and maybe switching to a Cayman. I think that if I were to learn how to drive the Carrera better that I would find it more fun to own. So I am toying with doing a Hooked on Driving DE at a track nearby-a 5 mile road course.
I know they have specific requirements for the pre test for your car condition. I think I would be in pretty good shape there.
I am thinking that a first DE should not be too hard on a car but was wondering what others think.
I also thought about putting in a Steve Wong chip but both shops I go to think it is not a great idea-any thoughts on this?
Thank you,