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Intake Air Temp Sensor Relocation 

 

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 Post subject: Intake Air Temp Sensor Relocation
Posted: Sun Aug 08, 2010 10:19 pm 
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coming up to the final stages of finishing the gt40p/explorer manifold install on the ef and im undecided as to where im going to put the ait sensor.

originally i was going to have a bung welded and a thread tapped on the intake tube (3" stainless steel) as per the au's but then i remembered working on a my brothers vt and noticing that it has the air charge sensor plugged into a hole on the air box lid.

i like the idea of it being in the upper air box as it will take 5min max to drill a hole and look a hell of a lot cleaner as opposed to a few days wait while i have someone weld a bung and tap a thread in the intake tube not mention the $100 plus labour charge.

cheers in advance for any replies

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Sun Aug 08, 2010 11:42 pm 
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I put mine in the intake manifold as per std. But I got it welded at work for nothing. Should be ok in the intake as per AU. Holden's run in the air box lid. Manifold is probably thick enough to just drill & tap. I just put one in a tunnel ram that way & it worked fine. Regards TPVM.

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Mon Aug 09, 2010 12:22 pm 
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Alan - where abouts did you put yours on the AU Manifold?

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Mon Aug 09, 2010 3:44 pm 
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Depending on which ecu your engine runs, moving the IAT sensor to the AU location in the inlet tube may inhibit adaptive learning under certain ambient conditions (low temp) as the minimum ACT will never be reached. They were often set to a minimum of 100°F = 38°C to allow for the intake charge heating through the manifold. The minimum set point can be changed but requires a chip.

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Mon Aug 09, 2010 11:38 pm 
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Good to know that. I fitted mine in the same place as EF one's are. Regards Alan TPVM.

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Tue Aug 10, 2010 10:05 am 
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So you just tapped #5?

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Tue Aug 10, 2010 12:54 pm 
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I did weld a boss on. But you probably could just tap it. Regards Alan TPVM.

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Wed Aug 11, 2010 2:28 am 
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xafalcon wrote:
Depending on which ecu your engine runs, moving the IAT sensor to the AU location in the inlet tube may inhibit adaptive learning under certain ambient conditions (low temp) as the minimum ACT will never be reached. They were often set to a minimum of 100°F = 38°C to allow for the intake charge heating through the manifold. The minimum set point can be changed but requires a chip.


That's good info. I have mine mounted where the dog turd used to be and the car usually runs a bit lumpy most of the time. I did notice that in hot weather, the car runs a LOT better than when it was in the manifold. I might swap it back there in colder weather and see what happens.

Mike

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Wed Aug 11, 2010 11:29 am 
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xafalcon wrote:
Depending on which ecu your engine runs, moving the IAT sensor to the AU location in the inlet tube may inhibit adaptive learning under certain ambient conditions (low temp) as the minimum ACT will never be reached. They were often set to a minimum of 100°F = 38°C to allow for the intake charge heating through the manifold. The minimum set point can be changed but requires a chip.


off the top off my head its a 4ddf ecu (ef s1). after all mods are done and dusted i had planned to book it in to either bluepower or electronic automotive for a tune.

from what i understand from your post is that it will be fine to put the sensor in the intake tube or the upper lid so long as the car is tuned accordingly

cheers

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Wed Aug 11, 2010 11:40 am 
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That will all depend on your tuner - some will go the extra mile (and change the learn windows). Most wont - hobbyists will. Most tuners will focus on your tunes themselves, and wont be concerned about the self-learn functions.

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Wed Aug 11, 2010 12:37 pm 
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Nigel wrote:
That will all depend on your tuner - some will go the extra mile (and change the learn windows). Most wont - hobbyists will. Most tuners will focus on your tunes themselves, and wont be concerned about the self-learn functions.

Nigel


fair enough, so it's best to request that they look at the self learn windows and adjust them to suit when i book it in.

 

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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Wed Aug 11, 2010 12:40 pm 
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depends on if they know that much about it...

If your a tuner youd typically only worry about the maps, where they are and how to adjust them.

You may get more bang for your buck doing your own J3 chip....
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 Post subject: Re: Intake Air Temp Sensor Relocation
Posted: Wed Aug 11, 2010 7:52 pm 
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Most ecu binary definitions don't include many of the adaptive learning functions, none of my EF-EL ones do. But they are all closely based on the original A9L code. And since the factory AIT sensor location for the EF V8 (all E-series V8's in fact) is the same as 89-93 Mustangs with the A9L ecu, it is highly likely that the same minimum value (100°F) remains.

My advise is to mount the IAT as close to the original E-series location as possible.

 

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