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Air temp sensor for going speed density..

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Old Nov 6, 2009 | 11:09 PM
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From: dsoc.co.nr - Dorset Subaru OC
Default Air temp sensor for going speed density..

I'm looking for an air temp sensor so I can convert my car to speed density. Does anyone have any recommendations?

I was looking at something like this: Ford Cosworth Air Temp Sensor. Sierra Escort (ATS) on eBay (end time 27-Nov-09 11:17:48 GMT)

Do you think it will be accurate enough?

Cheers
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Old Nov 7, 2009 | 10:20 AM
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From: MY06 STi Spec D
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Need to know what ECU you are using to select the right sensor.
The sensor will need a particular feed voltage and will give a certain signal range in response to the temp. Get this mismatched to the ECU could be expensive.

Also try and use a sensor with a fast response rate.
e.g Sensors

BTW, trying to buy this sensor seems to show its free?

Nick
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Old Nov 7, 2009 | 11:02 AM
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From: dsoc.co.nr - Dorset Subaru OC
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Thanks for the info, i'll contact them and see how much they want for it

The ECU I will be using is an Adaptronic E420c (.:AdapTronic:.)

My plan is to do a temp sweep and monitor the resistance with a multimeter. I can then use a formula found the ECU documentation to calculate what the ADC value should be. I will then input these values into a calibration chart to calibrate the sensor. Does that sound logical or do I need to ensure the sensor's resistance is in a certain range?
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Old Nov 7, 2009 | 11:20 AM
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Looks like there's some info here on sensor responses:

Recommend a IAT sensor. **with solution**
Bug in the Aux Temp ADC Table?
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Old Nov 7, 2009 | 04:34 PM
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From: dsoc.co.nr - Dorset Subaru OC
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Oh yes that first thread was very usful. So it looks like the SimTek sensor should do it. I did try giving them a call but they weren't in today. I'll try again monday
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