What changes in the car when converting to LPG?

By installing an LPG system, a vehicle is created that runs on LPG AND petrol. A second, independent fuel system is installed in the car, which uses a second tank. This is usually fitted in the spare tire space, while alternatively it can be placed in the luggage compartment or under the car. LPG is in its liquid form during refueling and storage and is converted to gas just before entering the combustion system