Autool CT400 GDI 6-Cylinder Petrol Injector Tester R0.00 EX VAT The advanced Autool CT400 6-Cylinder Petrol Injector Cleaner utilizes cutting-edge ultrasonic technology to effectively clean and inspect standard car fuel injectors, including EFI, FSI, and GDI types. Designed for Mercedes-Benz, BMW, Audi, Porsche, Ford, and other direct injection engines, featuring smart ultrasonic cleaning technology for thorough cleaning, with 9 injector testing modes, multi-voltage capability, and thermal protection.