LPG on an RS6/4?

[leemarkadams]

Just wondering what peoples thoughts are on getting an LPG conversion on an AUDI RS6 or RS4 (thinking about year 2002-4)? Reason being I do about 18-20000 mpa but fancy a performance car to do this in. I am also thinking of a BMW 335D, but the Audi with the LPG SHOULD give about the same MPG but be a bit more fun to drive.

Thanks

Lee

[worsy]

From comments on here it appears to make previously reliable cars unreliable.

[ecain63]

As above, very few have managed to make it a reliable alternative. Besides, why have an RS4 or RS6 and worry about fuel consumption? Hardly the point of the car!! The other thing is that the LPG will only be of use when you are monging it on the motorway. As soon as you hit the loud pedal in any way (especially in the RS6 as it has a very excitable kick-down) the system will shift from LPG to petrol thus defeating the purpose of the conversion. Just enjoy the cars for what they are.

[ecain63]

Sorry, you must have a different system to what i have seen. The ones im used to are mixer systems that run LPG when driving sedately and progressively switching to petrol the more throttle you give until running 100% petrol at full WOT.

[Dr G]

We see a couple of S4s that run on LPG and see them far more often than their petrol brethren! I don't know how much of that is down to the quality of parts or the quality of install but it does make me a bit hesitant. On the other hand I know people that run LPG on big 4x4 tanks with no problems at all.

Complicated cars like the RS4/6 would worry me even more, LPG is a very high octane fuel as I understand it but I'd be surprised if anyone could offer a level of knowledge/experience on converting one of these cars that is anything like the development that Audi put into making them run right on petrol (both of these cars can spend a lot of time not running right if they're unloved).

If you've already decided that you're going to do it then I guess your first port of call would be to find someone, somewhere used to installing it on performance metal.

[zip929]

I have an RS6 with LPG.
Performance is still blistering, and with the latest software update the transition between LPG and Petrol when using high revs is hardly noticeable.
My only gripe is that the LPG only lasts for around 120 miles betweeen refills.
This is with a 60 litre LPG tank.
LPG was already on the car when I bought it, the previous owner paid about £2,500 for the conversion.
It certainly cuts down on my fuel bills, although I only use the car for weekend blasts.

[WINSLO]

Hi i have an 2003 RS6 avant on LPG, the system is a zavolli multipoint. There is a 90L tank in the boot, which doesnt take up as much space as you would think! Tank range is around 220-300 depensing on driving style. No loss in performance, is on LPG all the way to the redline.

Im going to be putting the car up for sale in 2 weeks when i return off my holidays

Let me know if interested

CHEERS

[Rofly Lollers]

bigbusa said:

Hi chaps I also have an Audi RS6 2003 Saloon running XLR8 LPG system. Bought car already modified and had no problems with it since. Took car to MRC open day a few months ago and got it remapped that weekend and gave 500ps / 700Nm on rolling road, best figures using LPG as octane rating is 105 insead of super unleaded 99. LPG costs me 53p/lt up lately from 49p/lt giving up to 50mpg equivelent on run with town running about 32mpg. Lots of synics out there but these running costs with 500bhp suit me fine and stuff all the purists who say they would never convert their cars, let them keep paying their high fuel costs and stop slagging us for trying to save a few bob. From what I have seen on the forums so far most of them would never have these cars either if it was not for their warrenty companys paying all the bills. I remember one thread being so snobish listing what all RS6 owners did for a living and they were mostly company owners/directors, etc (Lowest class of job at time was a deep sea diver on oil rigs) and they continually slag off anyone working class for having one of these cars as we can not afford to run one.

That's a big chip you have on your shoulder.

[Silver940]

worsy said:

From comments on here it appears to make previously reliable cars unreliable.

Just to even thigs up a bit, my reliable golf converted at 120k. Now done 184k and still perfectly reliable.

[leemarkadams]

WINSLO said:

Hi i have an 2003 RS6 avant on LPG, the system is a zavolli multipoint. There is a 90L tank in the boot, which doesnt take up as much space as you would think! Tank range is around 220-300 depensing on driving style. No loss in performance, is on LPG all the way to the redline.

Im going to be putting the car up for sale in 2 weeks when i return off my holidays

Let me know if interested

CHEERS

Sent you an email....