Seems pretty far enough

edit: RSX sensor shown below. S2k looks the same

 

That's what the sensor looks like when the outer plastic is removed.

I'm going to do a full write up on moving the IAT sensor from the IM to the charge piping. I don't know when, but I will. In short, the results are very positive and worth the effort.

 

The IAT in the manifold becomes heat soaked from the very manifold it is mounted in during low flow situations. When trying to use IAT comp, if you try pulling some fuel as the temps go up, you can find your car barely idling between AutoX runs when you have a co-driver running back-to-back. BTDT.

Honda moving the sensor to the rubber intake hose was a good move.

 

Has anyone with an 06+ thought of mounting the IAT sensor in the air pump port of the aftercooler? I think that would be the location with the most realistic intake temperature and shouldn't get heat soaked due to the coolant running through the aftecooler. I was debating doing this when I finally get my build done.

 

It's been a while I've looked at the aftercooler, isn't the air pump port before it gets cooled?

I would put a threaded 1/8 NPT bung and weld it to the aftercooler outlet.

Here's a RSX IAT sensor placed in a NPT fitting using epoxy

Taken from https://www.s2ki.com/s2000/topic/906...t__p__21817077

 

It looks like the air pump port is post-aftercooler (I just went a took a pic of mine). However, I do like the NPT idea and I think some portions of the aftercooler are thick enough aluminum that I could just tap it for NPT thread without any welding.

 

It's flipped on the SOS unit. The air pump port is the hot side.

courtesy CoolGuy094

 

One of these days i am going to install some thermal insulating material between the sensor and manifold. I think that would help. Can't hurt.

 

Well its a pretty simple experiment to see if the AIT sensor is working properly, just read the temp with the car cold that has been siting for 24 hours. If it reads ambient then most likely it is working properly. Moving your sensor can be a bad idea. Any length of piping that air flows through will conduct heat to the charge air, especially aluminum pipe. The reason Honda could move the AIT without affecting the reading, is that the stock intake is plastic. Plastic has a very low thermal conductivity. You want to tune for the air temp as it enters the cylinder, this gives the ecu the best approximation of actual AIT.

Most people miss the point of AIT numbers. Unless you are drawing air from outside the engine bay completely, your radiator has more to do with Ait,s than anything else. A radiator is essentially a air heater, your intake takes in air that has gone through the radiator! If your AIT sensor says that your intake temp is ambient, that would be more of an indicator of a broken sensor than +20 over ambient.

 

on my evo the IAT sensor is aftermarket on my charge piping after the intercooler. wired to AEM. works well.