Miata Turbo Forum - Boost cars, acquire cats. - IAT temps... how hot is too hot?

Quote:

Originally Posted by umwhat (Post 1310429)

Stock, newish Kia, just to use as a reference point.... If a NEW car has somewhat fluctuating IAT that run anywhere from ambient to 'whatever over ambient', then I can extrapolate some of that info to my NB. I also will start monitoring my wife's Kia Soul's intake temps too, just to see if they get so high over ambient.

Just another reference point. My gf's IS300's IAT sensor is always within 10 of ambient. It uses an IAT sensor somewhere behind the radiator, but the intake duct goes over the radiator (like the JR intake).

I can get the IAT within 10* of ambient, but if I wanted to see the actual temps right before the TB to verify and temps shoot up.

Unless I haven't used the proper search terms and I haven't found the proper threads, I suspect the NB1 OEM IAT sensor housing itself heatsoaks. I'm not sure if the GM IAT sensor is used for this reason or another.

As far as ground temps, I find with 100+ ambient temps, ground temps are usually 25* above ambient so it's very difficult to keep IAT within 10*