LPG for turbo & direct-injection engines (GDI, TSI, FSI): can you, and which kind

“Can you even run gas on a turbo with direct injection?” is one of the most common questions. The short answer: yes, you can. But such engines must not be treated like a simple naturally-aspirated one — the right generation, quality components and precise tuning all matter.

Why modern engines are trickier

Direct-injection engines (GDI on Hyundai/Kia, TSI/TFSI on the VAG group, FSI, Mazda SkyActiv and others) inject petrol straight into the cylinder under high pressure. Their petrol injectors are partly cooled by the petrol itself. If you simply “switch off” the petrol and run on gas, the injectors can overheat. That is why the ordinary 4th generation does not suit here.

The solution — the 6th generation

The 6th generation delivers gas in liquid phase and works together with the factory system: part of the fuel still comes as petrol so the injectors keep running and don’t overheat. This way the engine gets the gas saving with no risk to the fuel system. Read more about the differences in the article on LPG generations.

Turbo without direct injection

If you have a turbo engine with ordinary port injection (not direct), the 4th generation usually fits. But on forced-induction engines, quality tuning under load and correctly sized injectors are especially important — the performance headroom must cover the turbo’s work.

What to watch for

• Valve protection. On some engines a valve lubrication system (valve saver) is useful — it extends valve life when running on gas.
• Quality components. The reducer, injectors and ECU must match the engine’s power. We work with proven brands (Alex, AC Stag, Lovato, Landi Renzo, Digitronic and others).
• Proper tuning. This is half the battle: correct calibration gives smooth running, honest consumption and a healthy engine.

Bottom line

LPG can be fitted to a modern turbo engine and it pays off — you just need the right generation and a skilled installer. Bring the car in for inspection: we’ll check the engine, choose the equipment and tell you honestly what result to expect. Current installation prices are on a separate page, and you can estimate your savings with the calculator.