The guy I was discussing this with was working in the EPA vehicle testing station as an engineer for approx 25 yrs, I reckon the advice he is giving is pretty solid. He just gave away a 5 gas analyser to RMIT for their alternative fuels program and is acting as their consultant, he also was involved in getting the Robnell's and a number of other replicas emission compliant up until closure of the facility which then it all went to VIPAC....I reckon it would be hard to find someone more qualified who is on our side trying to come up with some solutions, at $600 plus per test I know that money could be spent better elsewhere pimpin my ride..