Bimmerfest - BMW Forums - View Single Post - winter weather - eco-pro mode better?
View Single Post
Old 01-03-2013, 01:03 PM
lbjgh's Avatar
lbjgh lbjgh is offline
Officially Welcomed to the 'Fest
Location: North of Toronto
Join Date: Dec 2011
Posts: 803
Mein Auto: 2013 X3 M-Sport
Originally Posted by tango131 View Post
turbo cars in general LOOOOOOVE the cold. the colder the better. cold air also tend to be dry, which is also better. the atmospheric cold air cools the intercooler better which in turn significantly cools the (turbo) pressurized intake air, delivering more power, as the computer can adjust timing, AFR, boost, etc. to play happy with the cold air. back in my subaru days, car had more power you could feel when it was cold out. the colder and dryer the air the happier a turbo engine is (cold allows a denser fuel mix too). the opposite is the inverse, the hotter and more humid the air, the less happy the turbo engine is as cpu has to retard timing, enrich the fuel mixture, etc creating a bit less power.

you are just feeling your car have a bit more power... .
That's brilliant tango131... I never thought about that but it makes perfect sense.

Originally Posted by NoI4plz View Post
Eco-pro kills excited driving, hence your not as pedal happy, which is of keen importance when driving in wintery weather.

Also doesnt the X3 have an option for a customized mode, where one can select the driving preferences that you want.
My point exactly... eco-pro almost feels like normal mode in cold conditions.
Reply With Quote