That youtube link has a different procedure to the on I've used..
http://www.z4-forum.com/forum/viewtopic ... eset#p2221
The Youtube one looks like it might be for learning full throttle at the pedal sensor.
Incidentally - I ordered the engine top front sensor for Β£47 on Weds evening, arrived Friday morning on free 3-5 day delivery, and installed on Saturday in under 10 mins, which included ar5ing about trying to get a screwdriver that fitted between the unit and the mount plate conveniently blocking access. Fortunately I have a 1/4 inch socket set with a bit holder.
There is an improvement - the initial throttle is more progressive at small openings, which suggests the unit might have had some wear on it (though it looked fine). Before if trying to get out of a sideroad quickly there was a slight pause then it would rev higher than you wanted, meaning you tended to lift slightly then sometimes it bogged down, then a bang as the power came in. Now that is much better.
Even the wife seemed to notice it driving back last night in her work shoes
Paul