Is 250 F Sport Lpg Convertion

[j200hew]

Hi all a am buying a 10 plate is 250 f sport and thinking of converting it to run on LPG .

Has any one on here done this and has it caused any problems if so what kind of problems did it cause.

Was it worth doing, did it make it more fuel efficient as these cars are very thirsty and i drive 60 miles a day..

Many thanks John

[555Ltd]

hi john I personaly have not seen any 250is with lpg fitted.a friend of mine who has had a ls400 and a ls430 both with lpg has now got a 460 cannpt get it converted thankully! I think its something to do with the injection system having both direct and indirect injectors? I have had problems with rx on gas running too lean , eng lights on etc

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[ChumpusRex]

This IS250 cannot be converted to LPG.

Well, technically it could, but there is no suitable LPG ECU-add-on module available, or kit with the appropriate plumbing to connect the LPG system to the IS250's special fuel system.

A "traditional" style LPG conversion is totally separate to the original fuel system. A separate gas mixer and control system, with a switch to disable the incumbent petrol system.

Due to the advanced "direct injection" system used in the IS250, any conversion must run the LPG through the original petrol injectors, as the special injectors require fuel flow for cooling. This requires a much more complex ECU and requires complicated plumbing that can inject liquid LPG directly into the petrol pump and uses the existing injectors, compensating for the different fuel properties of LPG.

Some kits do exist for VAG cars, but they are very rare and very few installers have the special equipment needed to install them and set them up.

[j200hew]

Hi thanks for your replies i have looked into it and have come to the same conclusion..