my dual-fuel TW 4-sp auto wagon on gas uses 19l/100km, and always has. People here suggest that's too much, and I'd love it to use less. I don't hammer it. The place that regularly services the LPG system says everything is fine. So I took it to another place yesterday, recommended by the Impco website, and they said, "wow, we install Impco but not anything as primitive as this; there's no adjustment on this". They didn't charge and suggested I take it to ABBA, Somerton Park SA. Which I'll do.

My odometer seems fairly accurate. So my Q is, what are people getting out of a TL or TW on Impco factory gas? Not other systems, just the factory gas.

I was getting approximately 8.9 -13 ltrs per 100km from a factory dedicated gas TW sedan.

Cheers