I have 2002 Civic Prosmatec VTI Oriel, with 55 kg cylinder, Landi Renzo Kit, Tomasetto Lovato advancer/emulator. In Lahore I get w/o AC 75 to 95km, and with AC 70 to 85km. On long route (GT Road) I get 110 to 145 - depends on quality of Gas and vehicle speed.
I have an average driving style - not too hard and neither extremely sluggish.
In my opinion gas settings/adjustments might be the main problem.