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Hi all,

I just put up the first draft of my Insight home page:

:arrow:
http://fungiart.com/insight/index.html

I posted the warm air mod (using foam) I've been discussing, and put up some sound insulation and stereo upgrade pictures.

Please comment here or in the warm air mod threads about the warm air mods.

I still do NOT understand fully the technical aspects of the behind the grill air temperature sensor.

QUESTION:

Is it bad to block fresh air flow over the behind the grill sensor with a warm air mod like this?

- if the sensor is in a warm air pocket, it won't reflect the temp necessarily coming into the air intake hose mouth or around the engine itself - if that matters

QUESTION:

Is it bad NOT TO BLOCK the fresh air flow to that sensor with a mod such as this?

- on the other hand, if one blocks the radiator or otherwise reduces the dramatic cooling of the engine with an air flow mod like this, and one leaves the air temp sensor open to the air, it will be recording a colder temp than it should

:?: :?:
MANY QUESTIONS:

Normally the behind the grill sensor is reading a lower temperature than the air near the intake orifice, is it not?

- it is right up behind the grill, can't get colder than that?

Did Honda tune for this difference?

With the number of reports of defective sensors and sensors not even connected, what is the downside for this kind of mod?

:?: :!:

SAFETY QUESTION:

Is there a chance that lean burn is turning on because of warm air over a remote sensor, but the actual air going into the combustion chamber is not warm enough to warrant a lean burn - thereby damaging the engine over time?
 

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figgy said:
Hi all,


Is there a chance that lean burn is turning on because of warm air over a remote sensor, but the actual air going into the combustion chamber is not warm enough to warrant a lean burn - thereby damaging the engine over time?

IAT the inlet air temp should be the sensor that controls the computer.

The behind the grille sensor is just for the auto-stop feature, at least I think.
 

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Yeah I think the temp sensor is primarily just for emissions reasons. After a certain temperature it causes you to loose lean burn, and below another certain temp it causes auto stop to cease to function because it would cause a cold fire essentially because the cats would cool off enough in that time period. I could be wrong, but I don't think it would hurt the engine to trick it in to doing the above in cooler temperatures.
 
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