The following are known Action Replay Codes for Cooking Mama 2: Dinner With Friends on Nintendo DS (NDS).

Game ID: YCQE-57853F61

Press SELECT Max Contest Records
94000130 fffb0000
d5000000 00000063
c0000000 0000000f
d8000000 0217b24d
d2000000 00000000

TIME CODES:

Press L for More Time
94000130 fdff0000
021ac254 00631085
d2000000 00000000

Press R For No Time
94000130 feff0000
021ac254 03000000
d2000000 00000000

COOKING WITH MAMA:

Press SELECT to Turn Medals Gold
94000130 fffb0000
c0000000 0000004e
2217b110 00000064
2217b112 00000064
2217b113 00000064
2217b114 00000064
dc000000 00000004
d2000000 00000000