VX Series II - LPG Install

[jughead1]

Hi,
I want to install LPG in my 2002 Series II VX, but I wan to use the trip computer and fuel guage when running in LPG.

One installer told me that Holden sell the IMPCO Venturi kit that uses the standard fuel guage, but if I want a Vapour Injection system, I will have to have a seperate fuel guage and lose the trip computer fuel consumption functions.

Does anybody know of a way around this problem?

Cheers

JG

[jughead1]

Now, to further confues matters,....

I thought there were only three types of systems - Venturi, Vapour Injection and Liquid Injection.
Turns out there is a fourth type - Impco Air Valve.

Anyone know of this type of system? Is it as good as Vapour Injection?
The advantage of this system is that it uses the standard fuel guage and trip computer to show fuel economy.

Cheers.