Full set 4 cylinders lpg sequential injection system conversion kits: 1. LPG Sequential Reducer/ Regulator 2. LPG Multivalves ( Not included here, sell separately) 3. ECU set, including water temperature sensor, micro-switch, map sensor 4. Injector Rail, 3/ 4/ 6/ 8 cylinders available 5. Gas Filter 6. Cooper pipe/ tube 7. Low Pressure Hoses 8. Accessories ECU System: Mach Pro Approval: ISO 9001: 2000 The lpg conversion system is an electronically controlled gas fuelling system that can be installed on all injection vehicles equipped with closed-loop type control system. Compared to the â conventionalâ LPG systems, the gas is injected very near the in-take valves and therefore there is no longer any risk of backfiring. The gas sent from the cylinder flows through the regulator-vaporizer and supplies the distributor that establishes its flow rate towards the injectors fitted near the petrol electro-injectors. The processor of the LPG system processes the following signals to control the fuel setting correctly: engine RPM, Lambda probe and TPS, commanding both step motors of the distributor which enable the system to promptly respond to the inputs for more fuel, whereas in the deceleration phases the cut-off device triggers to reduce the amount of fuel sent to the engine to optimise the engine braking effect and to reduce pollutant emissions. The temperature signal of the regulator-vaporizer is exploited to control the switching function from petrol to gas. When the programmed temperature is reached the CPU sends the enabling signal required to switch from petrol to gas.