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Why is this unplugged?


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Good morning 

Not a lot of time for the Subaru this last 18 month or so😪, but was poking about the other day and found this and was wondering if anyone could shed light on why its disconnected. 

Thanks Neil 

20190830_131508.jpg

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  • 3 weeks later...

Sorry bud , didn't spot this post 1st time.

That's a barometric sensor , used to measure atmospheric air pressure,  so the ECU knows the density of the air coming into the engine to adjust fuelling. 

What type is the "new ecu" ?

As most mappers tend to still leave that sensor connected to help with fuel trims 

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