DO NOT RUN WITHOUT A MAFS! The computer uses the sensor (and others) to calibrate air fuel mixture (especially important on turbo cars). If you have to drive it without the sensor be very careful. Running without it you risk everything from getting lucky and nothing happening to leaning out your engine and and blowing it up or running rich and kill your catalytic converter and/or pre-cat. Your car should go into some form of limp/safe mode if it recognizes the sensor is not there but I wouldn't risk it.
Street Culture is in Nuremberg on Friday at the XXXL furniture store.
http://www.streetculture.de/