Holden Commodore 2006: Convert to gas

The best system for your car is a vapour-injection one and IMPCO was the system used by Holden for the factory-fitted cars. But there are lots of other systems that would also perform well. All systems are made in Italy, no matter the brand. Choose a well-known brand and an experienced installer, and ask the installer for references from other owners who have had similar systems fitted. The vapour-injection systems are more expensive than the older technology venturi/mixer ones, and on average are priced around $4500.