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How to compensate the fuel table on different atmospheric pressures ,for an example if we are sbove sea level and the tempreture is less around 25 c , like a hill climb event
Baro correction will be accounted for when tuning in Speed density, as you increase in altitude your MAP readings will drop due to baro dropping. I.E At sea level at WOT = 100kpa baro and 100kpa MAP at altitude at WOT baro = 80kpa and map will = 80kpa
Link have a handy option which is using manifold gauge pressure (MGP) as a load input. This will reference the baro sensor (on board) to read the manifold pressure relative to the baro air pressure. So for example on an N/A at WOT you will always be operating on the same load row no matter what the Baro pressure. This will mean the baro correction is accounted for in the fuel equation.
If you're tuning in Alpha N then it is suggested to still use a MAP sensor fitted to the manifold to allow for correction. This is ECU dependent in how they do their equation strategy.
Air temp tables will be setup separately to remove fuel as air temp increases from 20c, or increase fuel as temp drops. This is explained in the understanding AFR :)
