Incorrect.
You need to setup the idle, and in theory, the computer will adjust to your driving style.
IE: for the first 15mins you drive it it will record what you do and adjust accodingly.
So DON'T put your foot on the brake when you put it in gear but do everything in stages IE: let it idle for 2 mins THEN put it in gear THEN take it out of gear and put the a/c on then turn the a/c off and put your lights on for 2 mins then turn off and do your radio and so-on
Everything needs to be done BEFORE you drive off, afte everything has been done, do it all at once without putting your foot on the brake. for 2 mins then repeat with your foot on the brake.
THEN you can drive it they way you want it to respond. (IE: hard and it won't worry about fuel econo and vise versa)
This is the case with ALL cars from VN days - the latest.
Grath don't know shite. not even about their own cars.