Ok, I admit I know less than nothing about the mechanics of car engines - I am a driver of cars (a user if you like) and nothing more.
But upon looking through the specs on UK 318 and 320 (2010 model year) they both state they have a 1995cc engine. Both have identical published specs with the exception of the final drive ratio (which I assume has something to do with the RPM to Speed when in 6th Gear, but please note my first point above).
So the only other difference I can see between the two engines is the Power. So my question is what is it that controls this power? And is it theoretically possible to take an ECU map from the 320 and put it onto the 318? If not how would you go about 'upgrading' the 318 to a 320 or is that just not the done thing?
I am sure this question will have a lot of you rolling around the floor in fits of histerics, but if you could possibly refrain from flaming me in public I would be eternally grateful
Paul