This works on all CEMs to MY 2004, 10th place of VIN Y, 1, 2, 3 or 4. Read cem by arduino once, place it back into car and change how often you like by dice. screenshot.2 CEM tool.jpg Read CEM by arduino nano or UNO by this: #define BKPT 4 #define RESET 5 #define FREEZE 6 #define DSI 7 #define DSO 8...