HKS FCD [Fuel Cut Defender]

There is a boost up as a simple tuning menu for turbo cars, but in general, increasing the boost will make the engine breathe. This is because the stock computer judges that the boost is abnormal and controls it so that the fuel does not come out (fuel cut).
FCD is a device that cancels this fuel cut and expands the range of boost pressure settings.

*FCD is a device that only cancels fuel cut and cannot control fuel. Excessive boosting may damage the engine, so be careful.

For more details please go through the below link...
HKS FCD [Fuel Cut Defender]