Where's your IAT? (CSL guys)

[Slideways]

Might be a dumb question, but: are you two running different airboxes (OE vs various generations of Karb, etc)? Specifically, what is the IAT bung made of on each of your airboxes?

Looking at my Turner box the IAT bung is metal, which seems like it would be much more prone to getting hot from its surroundings and therefore heatsoaking the sensor than a plastic bung would. 😒

All three are metal. I've never heard a CSL airbox owner complain about the performance with the IAT sensor in the stock location.

[ATB88]

Yeah it’s a fair bit higher than ambient even in motion. When stopped it gets very high and takes several minutes for it to come back down when moving.

edit: just checked on a drive; my iat reads 105°F while cruising at 80 mph while ambient is 75°F

Might be a dumb question, but: are you two running different airboxes (OE vs various generations of Karb, etc)? Specifically, what is the IAT bung made of on each of your airboxes?

Looking at my Turner box the IAT bung is metal, which seems like it would be much more prone to getting hot from its surroundings and therefore heatsoaking the sensor than a plastic bung would. 😒

[terra]

In motion it’s reading significantly above ambient? Because when stopped it’s just a reflection of actually higher IATs when stopped...

Yeah it’s a fair bit higher than ambient even in motion. When stopped it gets very high and takes several minutes for it to come back down when moving.

edit: just checked on a drive; my iat reads 105°F while cruising at 80 mph while ambient is 75°F

[Obioban]

In motion it’s reading significantly above ambient? Because when stopped it’s just a reflection of actually higher IATs when stopped...

[terra]

The MAF sensor itself (which measures IATs) heat soaks on the stock box. The IAT sensor used on the CSL box does not. It’s a sensor issue, not a location issue.

Mine heatsoaks pretty badly.

[x Spades x]

I drilled a hole in the intake piping (behind the one hole CSL bumper - a little upstream out of site). It's calcing the cold air from down low

[HassanEido]

You need to place ur iat sensor in your intake tract. The closer it is to your intake charge without heat soaking it the better as it will help make ur fueling consistent. Too cold and the ecu dumps a bunsh of fuel and it runs rich. Too hot and it runs lean and it's a sad day.

[Obioban]

But with the CSL box your IAT is 2" from the oil filter housing, whereas the stock box has is much further away from the engine.

The MAF sensor itself (which measures IATs) heat soaks on the stock box. The IAT sensor used on the CSL box does not. It’s a sensor issue, not a location issue.

[Cubieman]

Normally stock airbox owners need to relocate the sensor— not csl.

But with the CSL box your IAT is 2" from the oil filter housing, whereas the stock box has is much further away from the engine.

[Obioban]

I don't know to a certainty as I have not looked at the data from my vehicle. Just from reading here and there I have seen relocating is done for that reason.
I put the sensor back where it belongs and ordered a Beru sensor that looks like its better suited for relocation as Slideways noted.
I'll check the numbers stock/relocated when I get it and report back.

Normally stock airbox owners need to relocate the sensor— not csl.

[Cubieman]

What makes you think the sensor is heat soaking? Mine is in the stock location, and it stays within 2-3 degrees of ambient when I'm in motion. When I'm in motion it goes up, but that's because the actually intake temps are going up...

I don't know to a certainty as I have not looked at the data from my vehicle. Just from reading here and there I have seen relocating is done for that reason.
I put the sensor back where it belongs and ordered a Beru sensor that looks like its better suited for relocation as Slideways noted.
I'll check the numbers stock/relocated when I get it and report back.

[Obioban]

What makes you think the sensor is heat soaking? Mine is in the stock location, and it stays within 2-3 degrees of ambient when I'm in motion. When I'm not in motion it goes up, but that's because the actually intake temps are going up...

[Cubieman]

Gotcha

[COVID-19]

I wonder if this sensor would work with the CSL sw, does it have the same scaling?

https://www.fcpeuro.com/products/air...RoCCWsQAvD_BwE

No you have to switch it to the US spec on ecuworx

[Cubieman]

I wonder if this sensor would work with the CSL sw, does it have the same scaling?

https://www.fcpeuro.com/products/air...RoCCWsQAvD_BwE


I need to start datalogging, what app are you using COVID? I've got one of those plug in OBD deals and the torque app. That would be easier than using my laptop.