TL;DR
Can you post some of your IAT's for some comparison? thanks

Backstory:
For years I have been curious about intake air temperatures and how it effects our cars. I have tried various intakes; from COTS to Frankenstein.

Main Goal:
+HP, eliminate heat-soak

Secondary Goal:
increase MPG, increase engine resiliency / life expectancy

Sources:
Manifold Gasket Install
Official s2ki Intake Thread

Current Setup:
[attachment=30103SC00018.png]
[attachment=30104SC00022.png]
[attachment=30105SC00024.png]
[attachment=30106SC00025.png]

Logged data:
Torque Log data - Day 1 *interactive graphs
Torque Log data - Day 2 *interactive graphs
Average Ambient = 65F
Average IAT = 120F


I have a few questions for all of you; as well as some minor discoveries I'd like to share.

1. Can any of you provide me with some raw IAT numbers w/ your intake setup? (including OEM air box)
2. I am still establishing a baseline for my numbers before I start to make some adjustments. However, I am beginning to see a trend. Once the manifold is soaked (via covection from the head or underhood temps), it has a tremendously hard time recovering.
3. RPM vs MPH. RPMs have substantially more effect on cooling than MPH does. For obvious reasons, the more cold air being sucked into the piping/manifold, the faster it 'cools'.

What's next:

• I am going to do more data logging to establish more baseline numbers
• Close up the hood vents
• Install Heat Shield
• re-install my remote temp sensor to gather under-hood temps
• purchase + install Hondata gasket
• Do more research on how IAT's relate to Timing Adjustments made by the ECU

thanks in advance and enjoy your lengthy weekend (if you get one),
--Matt

 

curious for what the research finds. It would be great to log temps and then the differences when you cancel out all the coolant that runs through the IM.

I am running the fipk+gold foil+coolant lines cancelled. Ambient temperature is obviously the biggest factor and should always be mentioned when talking any changes in iat readings. From what Ive seen, bypassing the coolant lines will let the IM temp clear out faster and you can actually rest your hand on it after a drive. (highly subjective and hard to quantize I know)

 

I'm running stock air intake and according to the ultra gauge my intake temps reads between 90-150 degrees depending on weather and what speed I'm going.

 

With aem v2 cai, hondata img, 68mm tb with no coolant provisions I average about 40 to 45celcius (104F in street driving).

WOT, temps drop about 10 to 15 degrees probably to 30C or actual ambient air (measured by iat at manifold) by the time I get to redline.

It's probably even lower now that socal is getting colder this last weekend.

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I forgot to mention I am working on doing this as well. I am a tad unsure on the routing of the line depending on whether you swap out the OEM gasket for a Hondata. During my 2 days of logging I was double Ambient at various points of the day. Here in FL it averages about 60F now. I have that info within the logs. I am logging speed, ambient, IAT, and timing (now).

Thank you s2000maniac. This information will help.

Thanks jh4db536. This is great information. This is what I'd like to get to. Did you see the greatest temperature differences when installing the gasket or the CIA?

 

The CAI helps the most. I should also mention that driving in stop and go/socal urban the MEASURED benefit of cold air intake isn't very different compared to a shortram or stock even if you cut holes in the bumper. The air moves too slowly through the tubes and is heated by the engine bay and manifold.

When you are WOT (throttle plate fully open) the MEASURED temperature decreases rapidly since cold air rushes into the engine before it has a chance to heat up.

The hondata IMG helps by lowering the temperature max like 5 to 10C. Usually don't go over 50C in heavy traffic. It also greatly slows the intake temp from rising after doing a WOT run.

Both products are great.

I probably have some old logs that show iat during a wot pull on the street

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