Only applicable on U.S. version/specification cars! Does not work on EURO, Japan or whatsoever country versions. This was/is mandatory on U.S. cars only:
http://tweakers.net/ext/f/hR59aPCwiH...Ny4Lg/full.png
note the remarks for the M70 V12 engine, first 6 cylinders 5 x stomping, second cylinder row 6 times!
Hmm, I wonder if this works on euro E31s where there's an engine management light for the control ecu?