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I need to use a map sensor with my engine/ecu setup, however I'm not sure where it is best to place it.
My engine came with two threaded holes in the centre throttle body that had been used for map sensors by the previous owner.
Should I use an external mounted map sensor with a vacuum tube from somewhere connected to it, like this one:
4 Bar MAP Sensor
Or should I get a sensor like the one below and mount it in threaded holes?
AEM 3.5 bar map sensor - EFI-Parts.co.uk: Connectors, Sensors, Trigger wheels, Wideband, Adaptronic, Zeitronix, AEM
You can just make out one of the holes here:
Why are there two threaded holes? Surely you don't need to run two sensors?
My engine came with two threaded holes in the centre throttle body that had been used for map sensors by the previous owner.
Should I use an external mounted map sensor with a vacuum tube from somewhere connected to it, like this one:
4 Bar MAP Sensor
Or should I get a sensor like the one below and mount it in threaded holes?
AEM 3.5 bar map sensor - EFI-Parts.co.uk: Connectors, Sensors, Trigger wheels, Wideband, Adaptronic, Zeitronix, AEM
You can just make out one of the holes here:

Why are there two threaded holes? Surely you don't need to run two sensors?