In Reply to: 99 M3 for my B-Day posted by LAW on May 14, 1999 at 07:12:28:
Take every step necessary to ensure that your gas cap is on correctly (wiggle after you put it on to ensure it's tight). Might sound stupid but beats near heart failure when you're cruising at 70+ MPH and your CHECK ENGINE light come on! Trust me on this one. If the cap is loose the computer senses a fuel pressure leak after about a quarter of a tank and trips the light. Also will help avoid a trip to the dealer to get it reset.
Good luck and have fun!