Best place for the IAC

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Sep 28, 2007 | 03:03 PM

Phil99vette

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From: Port Tobacco, MD

Best place for the IAC

My brain tells me after the IC and before the intake manifold. Does it matter which side of the TB it goes on? I've got an aluminum bung and a threaded IAC sensor.
Phil

Sep 28, 2007 | 08:18 PM

John_D.

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From: Lebanon TN

Shouldn't matter. May be a little hotter on the intake side at idle, should be basically the same when there is some significant air flowing. My opinion is that whatever works out to be more convenient for you to set up is the way to go.

Also if you have a bov, it should be after the bov.

Sep 30, 2007 | 02:08 AM

Jeff@TotalPerformanceEng

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Definately after the I/C. Although it shouldnt make any real difference being either before the T/B or after, I always run it before. I did notice on my last setup, when it was after the T/B, if it sat for any length of time, it took significantly longer to recover. I think it had to do with the sheilding of the throttle blade.

Sep 30, 2007 | 02:13 AM

Jeff@TotalPerformanceEng

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Also, with that threaded bung....Make sure the tip isnt shrouded by the fitting. I found that on mine, even when it was fully seated, the tip of the sensore was still heavily shrouded by the bung...Just a little heads up..

Oct 1, 2007 | 04:10 PM

John_D.

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Just to clarify, this is the IAT (intake air temp) sensor, not the IAC (idle air control) solenoid, right? I assumed that, but figured it never hurts to ask...

Oct 1, 2007 | 05:30 PM

Phil99vette

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Yeah, I jacked up and said IAC when I meant IAT.
Phil

Oct 1, 2007 | 07:46 PM

badnoma

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yea i would go after the intercooler and before the tb, but try to get it close to the tb. That is how i had it on my old setup. That way it can pull timing if things get too hot. If it was before the intercooler it may pull timing because it is getting a hot reading, but then the air is cooled and it is fine.