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Old 03-27-2017, 01:17 PM   #1
icdpride
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Default IAT Sensor for MS

Where do you guys put your IAT sensor for megasquirt?

In the intake like drill and tap a hole for it or just put it in the intercooler piping before the throttle body?
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Old 03-28-2017, 01:25 AM   #2
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i was recently advised by knowledgeable parties to never put it in the intake manifold, and to put it in the IC piping instead.
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Old 03-28-2017, 01:52 AM   #3
t8fanning
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The manual says pre throttle body. I put mine in the intake manifold and it heat soaked, so I moved it.
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Old 03-28-2017, 02:11 AM   #4
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In the aluminum intake piping pre-TB/post IC. The pipe is usually mounted with silicone couplers, so the heat transfer through conduction is minimal=>less heat soak.
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Old 03-28-2017, 09:31 AM   #5
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Got it thanks
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Old 03-28-2017, 10:21 AM   #6
Marvelous3
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I have mine in the charge pipe between the intercooler and the throttle body.
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Old 03-29-2017, 12:39 PM   #7
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Mine's JB welded in the IC -> TB pipe about 8" from the throttle body.
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Old 03-31-2017, 10:23 PM   #8
SwedishKnievel
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Ours is in the IC pipe between the IC exit and the TB. Nearer the IC as I was advised to keep it further from the engine to avoid heat soak.
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Old 04-07-2017, 03:11 PM   #9
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Also use a open element IAT, they don't heat soak as badly
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Old 04-07-2017, 09:46 PM   #10
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It also helps to insulate the outside of the pipe near the IAT sensor. Another option is to mount it directly to the cold end of the intercooler. The cold end of the IC should always be pretty close to the actual intake air temp.
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Old 04-13-2017, 01:14 PM   #11
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I used a plastic IAT sensor with a rubber grommet in the IC pipe so far I have had no heatsoak issues and no boost leaks,
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Old 04-13-2017, 02:25 PM   #12
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I tapped 3/8" npt threads into the Volvo boost piping I used between the intercooler and he intake manifold.
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Old 04-20-2017, 07:35 PM   #13
Boris740
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Quote:
Originally Posted by t8fanning View Post
The manual says pre throttle body. I put mine in the intake manifold and it heat soaked, so I moved it.
I am having the same problem with heat soak. Where did you move the sensor?
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Old 04-20-2017, 08:10 PM   #14
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Don't judge my dirty, grimey, engine bay. The car has been sitting for awhile and I snapped these pics as I was taking stuff off it a few months ago. Its cleaner now.

Anyway, arrows point to my AIT, I literally drilled a hole in the pipe and self-tapped it with the sensors threads then professionally JB-welded it.



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Old 04-20-2017, 08:23 PM   #15
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Mine is in the relatively same spot minus the JB weld.
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Old 04-27-2017, 04:07 PM   #16
linuxman51
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not in the piping at all on the gold car. under the intercooler piping on the blue car (cold side, before the tb), and here on the v8


haven't had a heat soak issue on any of them for any reason.
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