no, 0 would be stock. -100 would be no fuel flow at all. -80 would be 20% of your original flow rate. if you are using stock injectors you would want to add fuel under load. so your map should be all positive values above 100kpa. just make sure that you don't make the injectors go to 100% duty cycle.
U confirm? if 0, there is loud knocking sound and engine light will ON.
If -100 mean no fuel. then my car will die down. now my car able to drive if this setting. What is -100 mean?