Much better with TCS off
Here is what I noticed while specifically going through all situations I complained to dealer b4:
1. I can EASILY modulate engine response while in 6th gear when driving on the hilly highway.
2. Shifts are much quicker 1 to 4 when going from the dead stop
3. Downshifts ARE SO MUCH better from 6 to 5
4. I an easily modulate throttle for constant speed uphill with variable grade.
In my case I think we've got a winner. No only if Ford will tell me wtf is wrong with TCS/AdvanceTrac. Thought it suppose to help you not handicap you?
For everyone out there I would definitely suggest doing it then drive around some good hills