Electronic Fuel Cut Defender Defencer FCD For HKS Toyota Supra JZA80 ST185 ST205Electronic Fuel Cut Defender Defencer FCD For HKS Subaru Forester GT Liberty RS Most late model cars have in built defence mechanisms to guard against increases in boost pressure. Such systems are important but can be an obstacle when increasing boost pressure. The FCD2 will allow boost pressure to be increases above the factory level and prevent momentary shutdown of the fuel injection system. IMPORTANT NOTES ON YOUR BOOST CONTROLLER Once the fuel