Gas installed in the D2

Yep, I agree. I looked into chipping a while back and there was not much point with the D2 V8. And as Mke said, the gas has it's own ECU anyway. Apparently it advances the ignition significantly when on gas. I was told that when running it on gas all the time, to make sure I use premium petrol in the tank. Everytime you start the car it starts on petrol before changing over to gas. Apparently it can ping a bit if you don't used premium as it takes a little while for the computer to advancement of the gas.
If I am going to be running it on petrol for a while (like outback trips) then standard unleaded is fine.


What I am not sure of is: if there are 2 ecu's (1 for petrol and 1 for gas) why cant the changes in the mapping be almost instant which would mean no pinging??

The mapping change can be instant. We use the Haltech at work for one of the comp cars we have, and you would be amazed at how quicky it responds. The problem though is probably in the transition where the petrol is run out after starting and the gas is fed in, where the 2 fuels have different properties.

Quote:

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Originally Posted by tombraider

D1 is a different story, however why fit a Unichip when a complete aftermarket system is not much different in $$$.

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At the risk of being accused of hi-jacking this thread......Do you [coz I know you're involved with re-chipping and re-mapping Diesels - not sure if you're into Petrol also] of a straight forward plug-in or replacement chip or complete ECU that would be suitable for a V8 Disco 1?.......we all know that they run too rich at mid range and cruise, and too lean at high speed and full power......just wondering if there's something around you can just fit and just play around with ignition initial timing?????coz both the ignition system and the hot wire EFI is pretty basic/simple.

Are your tanks 3 smaller ones manifolded together?

I'm booked in for Jan with a vapour injection system too on the DII so your post was most interesting.

I'm getting the work done by Memmotts in Brisbane. They were recomended and the guy says he has done another install on a DII. But they all say that don't they.

Premmium is running at $1.23/L here.

Ian

Quote:

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Originally Posted by tombraider

System is "Vapour" injection, it still has a converter in the coolant line to vapourise the LPG...

The LPG then sits behind "injectors" (solonoids) mounted to the manifold and fired by the supplimentary ECU as required.

So no, not true LPG injection.

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Usually called SGI - Sequential Gas Injection?

Ron

Quote:

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Originally Posted by mrapocalypse

Are your tanks 3 smaller ones manifolded together?

I'm booked in for Jan with a vapour injection system too on the DII so your post was most interesting.

I'm getting the work done by Memmotts in Brisbane. They were recomended and the guy says he has done another install on a DII. But they all say that don't they.

Premmium is running at $1.23/L here.

Ian

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Yes 3 tanks joined together, they are the ones used in the falcon wagon

Did the first fill-up today.

Spent the past 2 days driving in peak hour traffic and got 22l/100km which sounds about right. I'm sure (hope) it will be a bit better with normal driving although I was usually getting 19-20l/100km on petrol.

The best thing was when I worked out the cost it came to $8.60/100km :D :D :D

Once thing does worry me though. The red light lit up on the gas guage after had only done 165km! As far as I knew the tank should be 60 litres usable. I was getting worried thinking I was going to be getting over 30l/100km but when I filled up it only took 39 litres. I will see how it goes on this tank and will take it rightout to empty but I am wondering whether the tanks are filling up properly.

Hi Adam,

Nice pics. Can I ask you to check your fuel consumption when you do the big trip to Brisbane?

:)

Lawrance
(from Hong Kong)

i got mine done at LPGAS 1 and by reading this post and a few before i'm a bit surprised by my fuel economy. I'm only getting average 270 (290max) in peak hour out of a 72 useable tank (usually only fills up 65-70L as i don't run it dry)

this means i'm only getting an average of 25-26L/100Km !!:o

Quote:

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Originally Posted by LRDV8

i got mine done at LPGAS 1 and by reading this post and a few before i'm a bit surprised by my fuel economy. I'm only getting average 270 (290max) in peak hour out of a 72 useable tank (usually only fills up 65-70L as i don't run it dry)

this means i'm only getting an average of 25-26L/100Km !!:o

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Unfortunately for you those figures are about right for the LPG1 gas install. It is not a sequential gas injection system so it is not closed loop so fuel economy and power will be down a fair bit....but it is cheaper.