Generally speaking, in some cases it makes sense, in others it does not. The boost control system on the 335 is adaptive. This means there is less of a need to have a special map for high altitudes. The only time when high altitude maps are completely necessary, is when the car uses absolute output boost control, like an evo for example. Absolute output cannot make large adjustments like adaptive boost control systems can. Also, it should be noted that modern cars already make changes to the mapping when they sense changes in altitude.
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Originally Posted by Insider
So whould a high altitude map make sense? Or would the 335i not need one?
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