Zavoli Bora - a budget LPG/CNG system

© ZavoliThe Zavoli Bora ECU

This is the first Zavoli system with a control unit manufactured by MTM known under BRC Gas Equipment brand – also a part of Fuel Systems Solutions.

A sequential fuel injection system Zavoli Bora allows users to convert 2-, 3- and 4-cylinder engines. It uses the same reliable components present in previous Zavoli systems (PAN gas injectors and Zeta reducers).

According to the manufacturer, the controller used in it has a unique software structure that allows for automatic compensation of supply for each cylinder when an engine is operating on gas fuel. The controller uses a powerful processor for automotive purposes (16-bit with 32 MHz clock frequency). The controller’s software selects an optimal injection time for each value of engine load through the use of a car’s OBD system. The controller is enclosed in a casing made of plastic and aluminum, and is equipped with a 48-pin connector.

Zeta reducer used in Zavoli Bora LPG systems is a single stage device that can operate in a supply pressure of up to 45 bars. It reduces its level to 1.2 bar. In the case of CNG systems, a single stage Meta pressure regulator is used. It operates at an inlet pressure of up to 260 bars, decreasing its value to 2 bars.

The system is offered with approval according to regulation 115 for the following car brands: Audi, Chevrolet, Citroen, Fiat, Ford, Kia, Hyundai, Mitsubishi, Opel, Peugeot, Renault, Seat, Skoda, Subaru, Suzuki, and Volkswagen.

Apart from the basic version, the Bora system is also offered for 5-, 6-, and 8-cylinder engines, with a controller (in a different, aluminum casing) equipped with a 56-pin connector. It also uses OBD signals. Bora Light version is also available, used to power 2-, 3-, and 4-cylinder engines with LPG and CNG. However, you cannot connect this version to a car’s OBD system.