I seek the Forum's ssistance please, My Factory fitted VS Dual Fuel is surging (200-300 rpm swings) when on Cruise Control when the engine is at operating temperatures and say has been running for 15-20 minutes plus.. I have switched back to petrol to see if ceases and the surging reduces almost to 'nil' that I could detect. Additionally, when lightly accelerating from stop, it 'feels' as if it is starving for gas - feels almost 'retarded' and if you press tthe accelerator harder, it suddenly accelerates as if it has suddenly a surge of fuel. I have checked all the air hoses between the Air cleaner and the IMPCO 225 body. A couple of the clamps were not as tight as they could be and are now secure. I have checked the IMPCO website and there is a list of persons approved by IMPCO to service their systems in SA. One such person os adjacent to my workplace Gary CampanielloPortside Mitsubishi1032 Port RdAlbert Park So that I am not seen as complete 'goose' is this all associated with the possible decline of the O2 Sensors not performing properly or is it a function of the ECM not registereing the LPG correctly. And if so, can they be 'by-passed' by tuning the ECM on the LPG cycle so that it ceases to surge. Any guidance will be appreciated. Kind regards Mike McInerney __________________ Mike McInerney