is the power figure that important?? if so get the op to put the ambient air temp sensor into a cup of tea.

imo unless the same rollers arfe used to gauge what difference new mods haved made you'll always get different results, with different operators, rollers etc etc

get to brunters and do a 0-100 or 30-130 or top speedn you'll soon know where the car is power wise.

love it though