FAQ
TL;DR: For a 2008 Mondeo 2.0 FLEX-FUEL, budget ~PLN 2,500–2,800; the cheapest kits are "too cheap". Choose single injectors and a stronger reducer. [Elektroda, tzok, post #16763639]
Quick Facts
- Cost target: PLN 2,500–2,800 for a decent, reliable LPG setup. [Elektroda, tzok, post #16763639]
- R-02 reducer is rated up to 136 HP; pick R01 or stronger for reserve. [Elektroda, przemek25l, post #16763473]
- Prefer single injectors (e.g., AC W03 or Barracuda) over rail-type for better dosing. [Elektroda, tzok, post #16763639]
- Suggested combo: KME TUR reducer + 4× Barracuda, drill near the head; QBOX basic saves ~PLN 100. [Elektroda, psooya, post #16764065]
- Flex-Fuel heads still risk valve-seat wear; check lash around 100,000 km. [Elektroda, psooya, post #16764065]
Is a ~PLN 2,000 auction kit good for my 2008 Mondeo 2.0 Duratec FLEX-FUEL?
No. Installers call such kits "too cheap." Plan PLN 2,500–2,800 for components that last. Choose single injectors and a higher-capacity reducer for stable fueling and headroom. This improves drivability and reduces risk of lean running under load. [Elektroda, tzok, post #16763639]
What reducer size should I use for this engine?
Avoid the R-02, which is rated only to 136 HP. Choose an R01 or a stronger unit to keep pressure stable at higher loads. Proper sizing prevents drop-offs during acceleration and keeps calibration consistent. [Elektroda, przemek25l, post #16763473]
Rail vs single injectors: which is better here?
Use single-cylinder injectors. They improve response and cylinder-to-cylinder balance versus a common rail. Installers specifically advise separate injectors for this Mondeo application. "Do not take the rail, only single injectors." [Elektroda, tzok, post #16763639]
Which parts combo has proven to drive well on this car?
One reported trouble-free setup used an Optima Nano ECU, Shark 1200 reducer, Barracuda 1×4 injectors, and an Ultra 360° filter. The owner said it “drove like a dream.” Treat this as a reference build, then verify locally. [Elektroda, batag, post #16790964]
Does the Optima controller work well with EGR-equipped engines like mine?
Some installers report poor behavior of Optima on engines with active EGR strategies. They advise choosing differently for smoother control. If you already have Optima, monitor trims and drivability closely. "Optima does not work properly in engines with EGR." [Elektroda, psooya, post #16791039]
What exactly is EGR and why does it matter for LPG tuning?
EGR recirculates exhaust gas at low to medium load, reducing oxygen and lowering combustion temperature to cut NOx. This changes burn speed and mixture needs, so LPG calibration must account for it. Power can feel lower and deposits may increase. [Elektroda, truubaduur, post #16814086]
How can I protect valve seats on LPG with this engine?
One approach is adding occasional petrol (Pb) injection under set conditions. Another is a dedicated valve-lubrication system. Both are installer-dependent strategies; implement only with clear targets and verification. "You can set the Pb extra injection." [Elektroda, truubaduur, post #16813311]
Does valve lubrication actually work, and when?
Explainers note lube reaches valves under intake vacuum, helping at low and medium load by forming a protective film that burns off. It offers little at wide-open throttle, where protection is weakest. Consider it a mitigation, not a cure. [Elektroda, psooya, post #16813858]
Can valve lubrication cause problems?
Yes. Users have seen valves stick or seal with oil residues when lubrication is misapplied or excessive. This is an edge case but real. If you use lube, dose precisely and inspect periodically. "I also saw valves stuck and sealed with oil." [Elektroda, truubaduur, post #16813914]
Are FLEX-FUEL (reinforced) valves safe long-term on LPG?
Reinforced valves reduce risk but do not eliminate it. One installer expects exhaust valve recession by about 100,000 km without mitigation. Plan periodic lash checks and consider protective strategies if you log high motorway loads. [Elektroda, psooya, post #16764065]
Any recommended parts list from installers for this Mondeo?
Suggested: KME TUR reducer, 4× Barracuda injectors placed near the head, and a QBOX basic ECU to trim cost. This combo targets stable fueling and smoother running. "KME TUR absolutely… 4× Barracuda… QBOX basic will save PLN 100." [Elektroda, psooya, post #16764065]
Should I worry about shop choice or warranties?
Yes. Use an authorized service center with stable operations. Some buyers chased promotions and later had no support after workshops closed. Verify installer credentials, aftercare, and software access before booking. [Elektroda, przemek25l, post #16763473]
How do I pick and set up an LPG kit for this car?
- Choose a reducer with capacity above your engine’s requirement.
- Fit single injectors close to the head for even delivery.
- Calibrate carefully; avoid under-sizing that forces lean conditions under load.
These basics improve reliability. [Elektroda, tzok, post #16763639]
Is adding petrol during LPG operation a must?
It is optional and tune-dependent. Some installers prefer pure LPG with correct dosing and no RPM-based tweaks. Others add petrol for seat protection. Decide with your tuner and verify results with logs and inspections. [Elektroda, psooya, post #16813412]
Greetings.
Good luck with your continued work 
