Hi, new to the forum and had a search but couldn't find any relevant info. I've been looking at injector cleaning equipment and it seems that machines for gasoline direct injection are very hard to come by apart from one major manufacturer. I have the equipment for standard indirect injection but would like to find someone interested in modifying the existing driver or building a driver circuit to pulse GDI injectors. The engine ecu opens the injectors with battery voltage but once running the injectors induce a flyback voltage which is stored in capacitors and then allows a brief voltage of up to 120V with a 12a spike, holding current is also controlled while the injector is open. As far as I know the old type petrol injectors are just pulsed at vehicle voltage. I've seen GDI adapter boxes are available to convert old equipment but they are still a huge expense. Anyone interested?