Not long bought another Subaru Forester 2.0 non turbo and had an Emer system fitted by Tubbs and it seems to be returning 37 MPG.
Okay it starts on petrol so maybe 35 MPG but OMG the last car we had also a 2.0 Forester fitted with a Stag system by Profess Autogas only got 23 MPG.
The last car also had a power loss on gas when the new one feels just the same on gas as it does on petrol.
Now Tubbs was £200 more expensive but that did include a Flashlube system that Profess said we didn't need
and he registered it on the UKLPG register so not really any more expensive. The only hassle was having to leave the car for a few days with Tubbs rather than getting it back on the same day but then I think it has been properly set up which takes time.
We did have a small issue with the car at first but this was quickly resolved and I can highly recommend Tubbs as the man to go to if you want an LPG system installed. I live in the Scottish Borders so a 560 Mile round trip but well worth it.