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IAT Relocation-Where to??

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Old Sep 10, 2012 | 01:38 PM
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Default IAT Relocation-Where to??

Hi Everyone

I have relocated my IAT sensor right below the latch for the hood. I am still getting heat sinking. Does anyone have any recommendations or pictures that would be a good place to relocate it?

Thanks in advance.
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Old Sep 11, 2012 | 02:12 AM
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What are your IAT's? Forced Induction? Do you drag race the car a lot?
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Old Sep 11, 2012 | 07:25 AM
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The IAT is the Inlet air temperature sensor. The tune will be SD (Speed Density) and i need to get the sensor out away from the heat of the engine bay. I did move it right below the hood latch but i am still picking up heat. Just looking for some recommendations on where other poeple have moved theres so they can get the real outside temperature other than the engine bay temp.
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Old Sep 11, 2012 | 09:58 AM
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Originally Posted by LT1RAY
What are YOUR IAT's?
Originally Posted by 1slowbusa
The IAT is the Inlet air temperature sensor. The tune will be SD (Speed Density) and i need to get the sensor out away from the heat of the engine bay. I did move it right below the hood latch but i am still picking up heat. Just looking for some recommendations on where other poeple have moved theres so they can get the real outside temperature other than the engine bay temp.
I asked what YOUR IAT's are, not what does IAT mean (example 96*)...and again are you running any type of forced induction? I use a threaded IAT sensor from the typhoon/syclone about two inches from the TB (throttle body) but I'm also boosted. The best location for the IAT sensor is in the stock location. Where you have it now is ok, but like you stated your still experiencing heat soak because the IAT sensor is in area where the air is heated by the radiator. Thanks for taking the time to read the original post.



http://lmgtfy.com/?q=LS1tech%3A+wher...ate+IAT+sensor
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Old Sep 11, 2012 | 10:08 AM
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I relocated mine to up by the windsheild, under the black
plastic grille. I used a Digi-Key thermistor of similar tempco.
This location works pretty well.

You want it well away from the engine bay and anything
that conducts heat from the engine bay. But you also
want that to be true of the air path. The more these two
diverge, the more error you have at certain corners of
operation.
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Old Sep 11, 2012 | 12:55 PM
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Originally Posted by jimmyblue
I relocated mine to up by the windsheild, under the black
plastic grille. I used a Digi-Key thermistor of similar tempco.
This location works pretty well.

You want it well away from the engine bay and anything
that conducts heat from the engine bay. But you also
want that to be true of the air path. The more these two
diverge, the more error you have at certain corners of
operation.
Thanks, is there any way you can post a couple of pictures of the location you mounted yours?
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Old Sep 11, 2012 | 04:56 PM
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IAT Sensor in the air stream behind the Throttle Body in the plastic FAST Intake for me...I did try everything, this location gives by far the best results in term of drivability, power and tuning:





Christian

Last edited by miami993c297; Sep 12, 2012 at 05:56 PM.
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Old Sep 11, 2012 | 06:09 PM
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Originally Posted by miami993c297
IAT Sensor in the air tream behind the Throttle Body in the plastic FAST Intake for me...I did try everything, this location gives by far the best results in term of drivability, power and tuning:





Christian
So you dont get any kind of heat soaking with it installed there? Are you tuned to operate with the maf or speed density (Map)?
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Old Sep 11, 2012 | 06:19 PM
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Originally Posted by jimmyblue
I relocated mine to up by the windsheild, under the black
plastic grille. I used a Digi-Key thermistor of similar tempco.
This location works pretty well.

You want it well away from the engine bay and anything
that conducts heat from the engine bay. But you also
want that to be true of the air path. The more these two
diverge, the more error you have at certain corners of
operation.
Pics?
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Old Sep 11, 2012 | 08:41 PM
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Originally Posted by 1slowbusa
So you dont get any kind of heat soaking with it installed there? Are you tuned to operate with the maf or speed density (Map)?
SD MAFless. No heat soak with the proper VE table on the 2002 Z06 PCM.

Christian
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Old Sep 12, 2012 | 05:39 PM
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I always thought you wanted it in the intake tract for the best reading to the motor, no?Not that critical?
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Old Sep 13, 2012 | 06:35 AM
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Originally Posted by 2nd Gen Fl 'bird
I always thought you wanted it in the intake tract for the best reading to the motor, no?Not that critical?
I had the IAT in the original position but the engine bay is heat soaking the sensor when in traffic and this is not giving a true temperature reading. So i moved it below the latch for the hood and it helped but when sitting in traffic sensor is still getting heat soaked.

I am looking for some advice and pictures to where the more experienced guys have moved there to solve this problem.
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Old Sep 14, 2012 | 12:55 PM
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Bumpss
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Old Sep 14, 2012 | 08:24 PM
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Originally Posted by 1slowbusa
Bumpss
What kind of IAT are you monitoring?
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Old Sep 14, 2012 | 10:03 PM
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just the inlet air temp but if i move the sensor away from the engine bay heat then i will be just reading the outside temp
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Old Sep 15, 2012 | 06:23 AM
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Originally Posted by 1slowbusa
just the inlet air temp but if i move the sensor away from the engine bay heat then i will be just reading the outside temp
Ok,

But what is the number in F° you are scanning your PCM is not managing heat soak?
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Old Sep 15, 2012 | 07:07 AM
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Originally Posted by jimmyblue
I relocated mine to up by the windsheild, under the black
plastic grille. I used a Digi-Key thermistor of similar tempco.
This location works pretty well.

You want it well away from the engine bay and anything
that conducts heat from the engine bay. But you also
want that to be true of the air path. The more these two
diverge, the more error you have at certain corners of
operation.
I would also like to see a pic of this set up.
Reply
Old Sep 15, 2012 | 08:07 AM
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For a NA motor, IAT shouldn't be as critical of a concern. Once you start moving air across the IAT, it should give a truer reading of what the actual ambient temperature is. If the IAT is heatsoaking, don't you think the air temperature is heating up as well?

Plus for a NA application, you're not adding or subtracting much based on IAT readings anyways, and any tuner will tell you that with an NA application 1-2 degrees of timing doesn't translate into much HP wise.
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