Issunaz has a mixer system on a 3.0 V6 which works so they know bog all.
So what doesn't work then?
I'd suggest subscribing to the yaho group lp-gas they are helpfull
I asked them to try and set the gas up, as it was cutting out when switched over to it. A lad I know works for them, so they were doing it cheaper.
The boss there told me it'll never run as it is because of the dual air intakes. He reckons the mixture's fine when idling, but as soon as you rev it there isn't enough gas and it'll blowback. Plus he said that one of the air intakes was soft and it should be air tight so the vacuum pulls the gas through the mixers.
I think it's had a blowback in the past and it's knackered the seal on one of them. The lad I know said if I get another set, he'll fit them instead and put the two mixers in lower down and level with each other.
I just can't see how someone would pay £1000+ for a system to be installed professionally, only for it never to work. It wouldn't happen would it.