Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

intake air temp gauge

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Old Aug 25, 2003 | 02:23 PM
  #1  
DamnYank!'s Avatar
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From: Knoxville TN
Car Info: 2003 Silver WRX
intake air temp gauge

anybody have info on what to get for this and how to best set it up? i've looked at a few gauges. Autometer is way too much $ and i don't like the look. Greddy has one in my range but not sure that includes the temp sender/probe and its only in deg Celcius.

What i need to now is a rough idea of what peaks intake temps can hit post-intercooler (prob tap between IC and TB).

thanks in advance!
Old Aug 25, 2003 | 09:47 PM
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Peaty's Avatar
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Car Info: 19' Impreza Sport Manual / 99 Miata / 13' OB
This help?

From a Subaru tec manual,

Old Aug 26, 2003 | 04:44 AM
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I would assume that you want to set soemthing up and will be looking at it often for a week or so till you get it sorted out.. If thats the case then get an OBDII scan tool and you can watch/measure IATs
Old Aug 26, 2003 | 04:01 PM
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Peaty, is the IAT sensor located upstream or downstream of the IC?
Old Aug 26, 2003 | 05:51 PM
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That's a good question, I'll have to check around.
Old Aug 26, 2003 | 07:46 PM
  #6  
DamnYank!'s Avatar
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from what i understand, IAT is in the airbox (more or less) and i'm looking for post-intercooler temps so the IAT is out.
Old Aug 26, 2003 | 08:05 PM
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I think you are right I'm pretty sure this is the IAT
Attached Thumbnails intake air temp gauge-airbox.jpg  
Old Aug 26, 2003 | 08:09 PM
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how is the iat at 240 degrees by the time it gets to the airbox? iy logger shows 80-150
Old Aug 26, 2003 | 08:16 PM
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IAT is in the airbox or essentially ambient temp depending on if you have removed the snorkus, installed a CAI or left it stock. Do you have the intake stock setup?

The 240° shown above is after the turbo charger has gotten ahold of the air. Just by taking air and compressing it you'll raise the temp. Throw in the fact you are routing it through a super hot spot and it gets pretty warm, say around 248-266°F

Last edited by Peaty; Aug 26, 2003 at 08:20 PM.
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