IAT Sensor Placment In A CAI

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Jul 19, 2012 | 08:58 AM

DopeFedZ

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IAT Sensor Placment In A CAI

I put this together yesterday but was wondering if it matters where I place the IAT sensor? I was just going to see where the stock plug would reach and place it somewhere around there. Not opposed to extending the IAT harness to move it somewhere else if it beneficial.

Jul 19, 2012 | 09:07 AM

SuperSlow02

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I extended mine about 2ft down into the bumper. In 70° air my car was seeing IATs around 130-140, now it reads barely above ambient

Jul 19, 2012 | 12:37 PM

94'BLKBRD

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Dont they say to place the iat sensor closest to the TB?

Jul 19, 2012 | 02:15 PM

Old Geezer

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Basically..

Quote:

Originally Posted by SuperSlow02

I extended mine about 2ft down into the bumper. In 70° air my car was seeing IATs around 130-140, now it reads barely above ambient

all you have done, is feed the pcm false info....it's calculating fuel and spark based on bogus input....

Jul 19, 2012 | 02:33 PM

DopeFedZ

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Not sure if it matters but my car is speed density tuned.

Jul 19, 2012 | 03:06 PM

astro11271984

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Are you running a filter on it?

Jul 19, 2012 | 03:13 PM

DopeFedZ

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I'm going to be able to remove the velocity stack section and attach a filter when needed.

Filler plate should keep big debris out. Hopefully lol...

Last edited by DopeFedZ; Jul 19, 2012 at 03:20 PM.

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Jul 19, 2012 | 03:45 PM

SSHAWK

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From: Forney, Tx

DopfedZ... Take a pic for me of what the inside of the bumper looks like with your setup.. Please.

Jul 19, 2012 | 03:56 PM

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DopeFedZ

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From: Houston TX

I'll try tonight. Have to head to school after work if not tomorrow. I don't have a bumper support under there.

Jul 19, 2012 | 04:06 PM

#11

SuperSlow02

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From: Cape Girardeau, MO

Quote:

Originally Posted by Old Geezer

all you have done, is feed the pcm false info....it's calculating fuel and spark based on bogus input....

Ah... So that's why it picked up ET and mph without any knock present.

Last edited by SuperSlow02; Jul 19, 2012 at 04:14 PM.

Jul 19, 2012 | 10:57 PM

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2fresh

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that looks awesome though

Jul 20, 2012 | 12:22 AM

#13

SSHAWK

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From: Forney, Tx

Quote:

Originally Posted by DopeFedZ

I'll try tonight. Have to head to school after work if not tomorrow. I don't have a bumper support under there.

I don't either .... So thats why I want to see how you have this! and how its going to the front of the bumper.

Jul 20, 2012 | 07:15 AM

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Old Geezer

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Could be...

Quote:

Originally Posted by SuperSlow02

Ah... So that's why it picked up ET and mph without any knock present.

Maybe that says something about the tune to begin with........

Jul 20, 2012 | 09:55 AM

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spy2520

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Quote:

Originally Posted by Old Geezer

Maybe that says something about the tune to begin with........

I agree. IAT seems to be used in a few airflow and spark tables. i guess there are ways around it though.

On a side note, I do wonder sometimes why the IAT wasn't just placed in the intake manifold rather than putting it before the TB and using (273.15+IAT+((ECT-IAT)*factor)) to calculate actual air temp in inside the intake manifold.

Jul 20, 2012 | 10:24 AM

#16

SuperSlow02

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From: Cape Girardeau, MO

Quote:

Originally Posted by Old Geezer

Maybe that says something about the tune to begin with........

So what your saying is that in 60-70° weather my car was actually injesting 130°+ air. IAT relocations have worked for several people with 0 il effects. I'll stick with heat soaked sensor being the culprit in my case