HELLO GENTLEMEN: I NEED YOUR HELP IN SOLVING A FEW PROBELMS: 1. AFTER WARMING UP CAR I AM GETTING A VERY LOW IDLE ABOUT 400-500 RPMS BUT THIS ONLY HAPPENS WHEN THE CAR IS A NORMAL RUNNING TEMP. AND IN GEAR. 2. I HAD THE VAPOR LOCK PROBLEM AND BOUGHT THE CHECK VALVE FROM BMW ($3.00). MY BMW CERTIFIED MECHANIC INSTALLED TO LINE LEADING BACK TO THE TANK IS THIS CORRECT???(THE LIE THAT RUNS FROM THE FUEL PRESSURE REGULATOR) 3. ALSO FROM READING OTHER POST IT SEEMS TO ME THAT I WILL BE NEEDING AN INTERIOR AND EXTERIOR FUEL PUMPS. DO U RECOMMEND THE VEGA FIX FOR THE IN-TANK PUMP AND WHAT WOULD USE FOR OUTSIDE FUEL PUMP? ANY HELP TO THESE QUESTIONS WILL BE HELPFUL?????? PLEASE ANYONE ELSE READING THIS IF U HAVE ANY IDEAS PLEASE FEEL FREE TO SEND THEM. THANK U.