The Vialle LPI system injects liquid LPG directly into the intake port (not vapor). It uses a high-pressure pump (inside the LPG tank), a liquid LPG filter, a vaporizer/heater, and liquid-specific injectors. The “TOP” in this manual context refers to:
LPI Vialle injectors have a specific "minimum opening time" (usually 1.2ms to 1.8ms). The "Top" manual provides the Battery Voltage Correction Table: lpi vialle technical manual top
If you do not adjust these software values (via the Vialle LPI Software, version 3.2 or higher), the engine will run lean on deceleration and rich at idle. The manual is the only place this table is published. The Vialle LPI system injects liquid LPG directly
| Hazard | Action | |--------|--------| | Liquid LPG at 5–30 bar | Depressurize system via software (ECU “purge” command) before opening any liquid line. | | Electrical connections | Disconnect battery negative. LPI injectors are peak-hold (low impedance); do not apply direct battery voltage. | | Vaporizer temperature | Surface may be hot (coolant-heated). Allow to cool before handling top cover. | If you do not adjust these software values