In Reply to: Does our BMW Run faster when Heater is fully on? posted by Chad on December 08, 1999 at 23:29:50:
NO, i think it is the opposite in fact. when the heater is on, it takes energy away from the alternator. this is why alot of race prepared street legal cars dont have heaters (beside loosing weight)so, when you are on the line, ready to go, remember to turn your air con off.