2002 BMW 325 CHECK ENGINE LITE

HI! CAR RUNS VERY ROUGH AT START-UP ON COLD MORNINGS, VERY LITTLE POWER. AFTER ABOUT 8 MILES STARTS RUNNING NORMAL. GIVING CODES AS FOLLOWS:

P0300 RANDOM/MULTIPLE CYLINDER MISFIRE DETECTION

P1347 MISFIRE CYLINDER 3 WITH FUEL CUTOFF

P1349 MISFIRE CYLINDER 4 WITH FUEL CUTOFF

ANY IDEAS???

THANKS, MIKE