[SteedaGrrl]

Noticed after having a shop install my MAPerformance IC today that my inlet air temps seem to be slightly higher (couple degrees higher than ambient) than they were with stock IC at highway speeds (close to ambient). It seems to be a few degrees cooler while at slower speeds though, which I find odd.
Also noticed the cylinder head temps were a few degrees higher (like 191) instead of the usual 185.
This is in 88 degree FL weather btw, so it is hot anyway.

 

[ecostang19]

Noticed after having a shop install my MAPerformance IC today that my inlet air temps seem to be slightly higher (couple degrees higher than ambient) than they were with stock IC at highway speeds (close to ambient). It seems to be a few degrees cooler while at slower speeds though, which I find odd.
Also noticed the cylinder head temps were a few degrees higher (like 191) instead of the usual 185.
This is in 88 degree FL weather btw, so it is hot anyway.

That is possible, charge air temps should be way down tho??

 

[Twign]

You gotta think about how tiny that stock ic was. It may cool faster but once you push pressurized air through it, it gets hot fast. A larger ic will take a lot longer to heat soak, which is why you upgrade to a larger one.

 

[dgc333]

You gotta think about how tiny that stock ic was. It may cool faster but once you push pressurized air through it, it gets hot fast. A larger ic will take a lot longer to heat soak, which is why you upgrade to a larger one.

The intercooler has no impact on inlet air temp. The inlet temperature is measured just after the air has gone through the air filter and before it gets to the turbo.

Dave

 

[Twign]

Ya my bad, I thought you were saying charge temp not ambient temp >.<

 

[gatornek]

It’s not possible for the iat to be colder than ambient temp. like previously said if you want to see what’s going on, look at your charge air temp, that is the air going into the engine. And with a stock intercooler, a mild throttle romp will heat things up quickly.

I have a 2016. How do you check "charge temp"? I don't see it on the guages. Is this strictly from the tuning data?

 

[dgc333]

You need to use a tuner or something like Torque Pro on your phone with a Bluetooth OBD adapter to see charge temps.

Dave

 

[Flipping Bird]

On my mustang gauge, I see 0 to +30 over ambient. I have a cobb intercooler.

 

[gatornek]

On my mustang gauge, I see 0 to +30 over ambient. I have a cobb intercooler.

Which Mustang guage?

 

[Go Further]

It's worth mentioning that inlet temperature can also be affected by the type of CAI or setup you have.

I've seen some people just add a cone pod filter to the end of the inlet tube, in no enclosure, and sucking in warmer air from the engine bay.
The heat-soak effect typically worsens on hot days and when the engine is under high loads.

 

[Flipping Bird]

Which Mustang guage?

The first gauge you select that shows cylinder head temp, IAT, etc, shown in pictures in this thread.

 

[gatornek]

The first gauge you select that shows cylinder head temp, IAT, etc, shown in pictures in this thread.

I was under the impression that "Inlet Air Temp" was the temperature of the air at the MAF sensor at the filter? Am I wrong? Is it the charge temp of the air, after the intercooler, going into the manifold?

 

[slojas]

I was under the impression that "Inlet Air Temp" was the temperature of the air at the MAF sensor at the filter? Am I wrong? Is it the charge temp of the air, after the intercooler, going into the manifold?

Our cars use a speed density type of tuning and therefore do not use mass air flow sensors.
The sensor at the air filter is simply a temperature sensor, the map sensor mounted on the exit side of the intercooler reads manifold absolute pressure and temperature of the pressurized air exiting the intercooler, there is a second map sensor located behind the throttle body on the side of the intake manifold as well.
Only boost pressure data is shown on the dashboard, to see the charge air temps you need a 3rd party device that connects to the odb port and reads the raw data from the car.

Pictured below is the map sensor.

Sent from my SM-G960W using Tapatalk

 

[gatornek]

FYI. I received my OBD2 connector for wireless use with my iphone. However, Torque Pro is not available on the App Store. Instead, they suggested OBDFusion. I paid $10 bucks for it but am not liking it too much. Maybe I'm just not using it to its full potential. I may buy myself a small little android tablet just to datalog in the car.

Anyway, can anyone suggest the best app on the apple app store for datalogging? Again, TorquePro is unavailable.

 

[bedwelljp]

IAT vs. Ambient is an interesting topic. We all agree that lower IAT makes for better power, but really lower IAT makes for lower Charge Air Temps. As I've been doing data logs for tuning I've been watching all of the temp counters and trying to see how they relate. So far I only have limited data, but I would guess any of the pro tuners could probably site for us chapter and verse about where exactly is the sweet spot for intake temps.

In general, in moving traffic, I'm seeing IAT as 2-3 degrees above ambient and CAT as roughly 20 degrees above that. Since adding pressure to the intake air increases it's temperature (Ideal Gas Law) it's something we do all need to be aware of, and why upgrading the intercooler is important.

where is the inlet temp sensor? I have just fitted a larger intercooler I know it has a sensor on it but does that measure the temperature of the air exiting the intercooler on its way to the engine.

 

[dgc333]

The IAT sensor is in the intake tube near the air box. CAT is the sensor in the outlet of the intercooler.

You need to use a hand held tuner or something like Torque Pro with a bluetooth OBDII dongle to see CAT.

Dave

 

[Nate2020s550]

Get an accessport v3

 

[Chepe.5oh]

So I just installed a ported 18 manifold on my mustang 16 and my head temp is at 207 and my inlet air temp is at 149 at idle once I drive it it drops once I’m at a light it will go up again is this normal with that modification I made or should I be worried ?

 

[Jimc12]

The inlet air temp is affected by many things. One being the ambient temperature, but heat from pavement, lack of air movement sitting still, will increase you well above ambient.