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Old 12-19-2012, 05:13 PM   #9 (permalink)
cheshirecat
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From what I've seen, the stock airbox intake temp is approx 10 degrees F hotter than ambient air temp while moving down the highway at speed. There's a lot of room for improvement here.

As far as measurement, any OBD2 device hooked into your android phone will be able to give you the car's intake temp. Cross-reference that with the ambient air temp from the trip computer and you're good to go.
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