LPG fuelling problem

[ex-derv]

I had my VR4 converted to LPG a couple of weeks ago - saved loads already! But, it seems to suffer from lack of fuel at 1500 - 2000 revs and slightly coughs sometimes like its running out. Haven't taken it back to be re-calibrated yet as he said to do a thousand miles first. I thought before I did I'd see if anyone had any experience or suggestions that might help.
Was also thinking of having it switch fully to petrol at 3500-4000 revs as that still leaves me plenty of cheap town driving and motorway cruising completely on gas. I have also heard of throttle position operated switches that can change over to petrol when your right foot is getting keen. Again, any experience or thoughts about this would be helpful.

[feonix]

Not sure what system you have but my car was fine upto 5500ish. it had it's own LPG computer that figures out when there is not enough fuel, so switched to petrol.

just needs to be re-calibrated i'd say. write down a list of issues and situations and see if they can adjust for it.

[ex-derv]

It's a zavoli system and I was told it was fine for turbo cars up to 400 brake. It's very laggy but hoping the recalibration will sort that out.

[ex-derv]

turns out the problem was a tank of dirty gas - the filter looked like it came out of a WW2 tank. Once it has been recalibrated and tweaked it went like the clappers of hell - better than on petrol actually. Its much quieter though, nowhere near as throaty but it seems to do about 200 miles on £30 of lpg depending on how keen you are.

[funkstardelux]

intersting stuff ..been thinking of gettting lpg fitted

[Madden]

Good fix mate.

Interested in the kit but can't find it anywhere on google. Can you tell me how much it cost and where i can buy it from?