Selection of an adequate LPG system depends on the electronic control system for petrol fuel, which is used in a given engine, so in the case of indirect sequential fuel injection, a 4th generation system will be used - BRC Sequent 24.11 or BRC Sequent Plug & Drive, while in the case of direct fuel injection (FSI, TSI), it will be the BRC Sequent SDI (injection of gaseous phase LPG) or 5th generation BRC LDI system (injection of liquid phase LPG). The BRC Sequent SDI and Sequent LDI systems are dedicated to a given car and type of engine and were developed especially for it.