The altitude pressure sensor provides instantaneous altitude pressure information to the Orion ECU. It will allow the Orion to calculate air density, which in turn determines the required fuel compensation for optimum combustion. It also adjusts ignition timing with altitude changes. Orion uses an optional built in internal 3 Bar map sensor or an external 1.1 Bar map sensor. You may swop the map and altitude sensors around to take advantage of the 3 Bar sensor onboard for normal MAP sensor operation. Note that the external sensor must then be a 1.1 Bar to improve accuracy and better resolution. Do not use the 2.5 Bar as it will read incorrect.
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