motorway driving is not what hes talking about here people, hes talking about driving a 10min drive to work and home and general driving about for short periods,,,,, i doubt closed loop will do that much for these times considering the cars almost always gonna be on the cold start map and in 3rd gear stopping at traffic lights ect

motorways i can see the benifit but round town i doubt hes gonna notice,, i had a greens chip off stu and that improved MPG just by the chip change,,, how much better would closed loop be for comuting 2 miles in a 30mph zone,,, cant see much personally but i aint totally sure about it