Air temp sensor....Placement in Charge pipes
 

Has does any one done this to avoid heat soak from engine/mainfold?

I am thinking of placing it just before the throttle body. In this area it should not see as much heat soak.

Please give you thoughts on this, also any disadvantages if any.

Thanks

Yeah I think this is actually pretty common. The usual area is just before the TB. Get up with Dudemaaanownsanrx7 if you'd like, he bought a bunch of aftermarket better temp sensors w/ clips that are pretty easy to hook up and give you a faster reaction to actual temps. He wrote a big thread about it in the FD section I believe.

yeah, I think they're a Triumph IAT. I picked up one from another vendor and don't recall who it was now; however, if I had to do it again, I'd support the forum and purchase one from Dudemaanowsanrx7.

Another idea is to attempt to reduce the heatsoak of the UIM by placing heat reflective tape on the bottom. Summitracing sells numerous kinds. I've seen both the DEI Reflect-A-GOLD Heat Barrier Tape and Thermo-Tec Thermo Shield Tape used on UIM.

http://www.summitracing.com/search/?...t%20tape&dds=1

Reflective tape and IAT in stock location, I think would suffice.

Pegasus racing also sells the heat barrier foil. I'd go with the replacement sensor in the stock location, imho.

www.fighters-garage.com they have them.( they call them a FRAITS...).That is where I got mine.

Dudemanownsanrx7 sells an open element IAT which absolutely rocks! im running one now and reaction time is almost instant.

that's who they were! I'd forgotten.

Thanks for the reply guys, I actually already have an an open element sensor from my old SDS ecu.

I just wanted to know if anyone else places it in the charge pipes instead of the IM.

Guys, nothing against the Fighter's Garage piece, but I have experience with both of them at the shop and the Dudeman version has a much more user friendly connector on it. Based on that it's the one to go with IMO :icon_tup:

that may be true. The Fighter's Garage piece (the one I have) has a metal clip that locks the plug in place with the harness plug. I imagine that'll be a PITA when trying to remove the UIM later.

Definitely get Dudeman's if you can.

Dudeman also makes a direct connection patch loom. One end connects to the factory IAT sensor connector and the other end to the new IAT sensor. No need to terminate a new connector.

Ive been thinking on this one for a while but with a true fast acting temp sensor I would want it as close to the intake ports as possible. The heatsoaked manifold will effect the air temp and ideally you want to know the temp of the air entering the motor as accuratly as possible. The problem with the stock sensor and the stock location is the sensor itself gets heatsoaked and doesnt really react to the air temperature with any reasonable speed or accuracy.

As an example; ambient temps of 25*c, Post turbo say 100*C, post intercooler 40*C, manifold temp 75*C, Air at the intake port 50*C.
Given the above values if the sensor is in the throttle body elbow is is likely reading 40*C, if it is a STOCK sensor in the stock location it is likely reading 65+*C. But wouldnt a FAST ACTING sensor in the stock location read closer to the actual air temp and not the manifold temp and read closer to the true 50 degree air thats entering the engine. I would prefer my AIT to read as close to whats entering the engine as possible.

Yes, the fast acting (dudeman) sensor has been shown to read lower when the throttle is opened -more air moving through lowers the temperature from the slower moving air at idle that has more of a chance to warm up through the intake piping.

With the fast reacting IAT sensors the best location is stock. They don't have the same heat soak problems as the stock sensor so you're temp readings are more accurate the closer you get to the intake ports as fd_neal mentioned.

If you're running the stock sensor then I would A: replace it with the open element style, or B shave it down and relocate it to the throttle body elbow.

Thanks for weighing in Dude. The sensor that I now use is open element, its located in the stock location, so thnik I got it right.

What do you mean shave down the stock sensor? Remove material from it?

Yeah the plastic insulator, this helps a bit and moving it helps it from getting heat soaked. But it's nothing compared to an open element sensor.

Provided the sensor you're using has the correct resistance range you should be good to go. Or if you're using an ecu that allows you to adjust for different types of sensors.

overkill? probably but it makes me happy.

http://img.photobucket.com/albums/v7...9/IMG_6219.jpg

Thats a good idea. Notice any temp differences?

I just put the tape on today. Supposedly reflects ambient temps of 2,000 degrees F. 15 bucks from summit racing for a 15ft roll (plenty left over). Search "Thermo-tec tape". It's pretty thick for tape and contains fiberglass.

It will a be a while before I could report anything back as the car is down for a bit while I get things sorted out under the hood.

:(

Except the aluminum of the lim will draw the heat directly from the irons that they happen to be touching. Unless you have some sort of insulating gasket.

Mine is at the tb elbow, no problems. I do have an extra dudeman air temp sensor if anyone needs it. Brand new never used w/ pigtail. $35 shipped.

Has anyone tuned their air temp corrections tables after installing the sensor? I tuned mine and was curious what settings other people ended up using.