i haven't have those kind of problem mentioned and i've been using my car everyday using lpg for morethan four months already... even my previous problem (hard starting when enging is cold) is gone... sadly the fuel consumption hasn't improved and it was averaging around 6.5 kilometer per liter for city driving only...

i haven't experienced a lost in terms of power during up hill i even left the gear in "D" mode, one of my frequent route is passing a short cut so called "bituka ng manok" at/near St. Ignacious Village comming from Marcos Highway, to Katipunan, going to Ateneo/UP... (sorry don't know the exact name of the road)

i haven't changed my spark plugs, still using OEM factory installed AC Delco spark plugs in my car...

been busy with work lately and should i have the time i would visit Chevy Libis, to have them reprogram my ecu, and check the belt timing mentioned before by ghosthunter... hopefully this will improve my fuel consumption...

one thing is odd, my last fulltank has reached 65 liters... (* Petron Marcos Highway) topgun, ghosthunter have you experienced this?

furthermore, the cost of fuel (gasoline/petrol, diesel, and kerosene) has been going down this past couple of days except LPG which the price remains the same... BAKIT??? Like diesel, lpg is also a buy product comming from petroleum refinery (same banana diba)... kaya bakit mahal pa din ang LPG??? tapos the government will impose a 3% tariff on all types of fuel starting October daw...