Deceleration Fuel Cut
This parameter is used to cut the fuel when the engine vacuum falls below the set value. This is useful for controlling emissions. You would use this parameter to stop injecting fuel when the engine is used to slow the momentum of the vehicle. An example would be decelerating the vehicle down a steep hill by closing the throttle.
Select at which vacuum value you would like the computer to cut fuel. The fuel injection is stopped when the vacuum is stronger than the selected value.
If this feature is not required select No Fuel Cut.