Microprocessor based gas injection controller. The device controls gas injection on the basis of sequential or non-sequential petrol injection. Seamless switching from petrol to gas as well as automatic switching to petrol In the event of gas shortage, which is additionally signalled with a special sound. Control panel with diodes indicating gas level. Computer adjusted parameters. Equipped with internal sequential petrol injection emulator. The device is compatible with 2-4 cylinder petrol engines (in-line or V). Available with various gas injectors tips: RAIL, Valtek, Reg, Zavoli, Matrix. Emulator wires are equipped with Europe/Bosh or universal connections.