18/06/2026
This is what excellent emissions look like- on the lower part of the display is a reading of 14.7 parts of air to one part of fuel ( molecules)-This is Air- fuel ratio ,the screen left is a 1 to zero ratio known as lambda hence the Greek sign, Stoichiometric is this precise measurement- stoichiometric is the holy grail target for ideal combustion.The top left of the is co or carbon monoxide which is 0- next on the right is hydrocarbons- which is unburnt fuel- the bad one for the ozone- again all zeros- in the middle of the screen has co2-carbon dioxide- a high percentage reflects excellent combustion & finally centre right is oxygen- the zero reflects no air leaks in the exhaust- this display also shows the catalytic converter working up to standards on a 20 year old car-- the numbers tell you the story this vehicle has excellent emissions & great fuel economy- does not get any better- M