3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
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Has anyone had an lpg (autogas) conversion done on their E46? (specifically 6 pot petrol car) Whats the results? With the cost of fuel going mad I am looking at any way of reducing costs of my beloved E46, dont say get a smaller car, you will get !! !!
My advice is that if you have the cash to convert it professionally then go for it...
Especially if you intend to keep your car for some years.
LPG is almost a quarter (At worst, half the price in some ares) of the price of unleaded and will carry you just as far !
Hardly any loss of power too !!
DAZ
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As I am keeping it till it drops, I am not too worried about cost but I was thinking of potential engine damage as well as performance, whats the thoughts on that.
I have been looking at doing the same conversion on my E38, I researched it, found a guy in the UK (Eddie Zyla) that has converted plenty of E38s, but nobody in Australia was brave enough to touch it. Give him a call at F1 Automotive (+44 1204 529 529) and tell him that Brett from Australia says hi.
Good luck, this guy seems to be the real deal with some of the development work he has been doing on new hybrid injection controllers.
It should work fine. LPG doesn't combust as much as petrol, so you will actually be putting less stress on the moving parts of the powertrain. Just be certain it gets done correctly. I've seen all kinds of cars be converted and never heard of any issues of engine damage. Let us know if you do get it done!
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Originally Posted by BMWBeauty416
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I am with DRz on this. My previous two cars (GMH Commodores) were on LPG (Mixer variant rather than injector). The V6 I took to 325,000 km before I sold it (still going strong) and the V8 had 427,000 km when I sold it (still going strong). The key is to get the conversion job done properly in the first place, and then keep it serviced regularly (sounds vaguely familiar really).
One thing I did do religiously was to start and run the engine on Petrol for 5km, and then end the day by running it on Petrol for the last 2km. I am not sure if its really necessary, but at worst it kept the injectors fresh.
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LPG (autogas) on E46 
I am looking at any way of reducing costs of my beloved E46, dont say get a smaller car, you will get !! 
!! 
2011 BMW E38 728i
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