IAT Transfer curve LS3 to LS1

[MikeOD]

Yeah, I think I'm going to do that...I have one more idea I'll try tomorrow during this blizzard when I can't go to work.

[shaun]

Try these

Fahrenheit
258.9687466 200.1874975 157.3671856 132.8281235 114.2656238 99.3593740 86.3515617 74.1171869 63.0781245 52.5312497 40.4374999 27.1484376 13.5781253 -0.3437495 -20.3828117 -39.9999989 -39.9999989

Celsius
126.0937481 93.4374986 69.6484365 56.0156242 45.7031243 37.4218744 30.1953121 23.3984372 17.2656247 11.4062498 4.6874999 -2.6953125 -10.2343748 -17.9687497 -29.1015621 -39.9999994 -39.9999994

Temperature flow chamber used while connected to ecu and adjusted to suit, entire range adjusted.
These are spot on for my car see how u go.

[ctd]

Tx's shaun, you did that with tools around the house very nice. I just started a lifter, valve spring & rocker arm upgrade so I'm disassembled right now. When I'm back together I will report back

[nkautz]

If you're not boosted, you can calibrate your Maf's IAT by hooking up a 2nd iat inside or near your air filter connected to it's own gauge and compare them. Adjust the IAT sensor cal until they are close enough. Am I right?

[anthonymd13]

Im guessing shauns data is pretty spot on?

[jgfnova]

Report back your findings if you can. I did find out that the CTS-V/ZL1/ZR1 IAT2 manifold temp sensor is the same scaling as a stock LS1/2/6 IAT. So using those temp sensors from a LSA or LS9 can be done on our older gen3 cars as well without any scaling of the IAT table.

For reference the bung for that IAT2 sensor is M14x1.5...

I am running P59 computer on LSA blower swap with ZL1 IAT in lid- Do I use the stock LS1/LS6 curve for IAT? I tired the above axis for the LS3 MAF card and reading was about 12 degrees low.

[68camaroLS6]

Just reviving this old thread, has anyone figured out what values from the previous posts are more accurate to use? Will appreciate if someone can put the values that eventually were tabulated.
Thanks in advance.

[68camaroLS6]

Could somebody share the IAT values that he/she ended up using?Thanks in advance.

[Alvin]

I have it.

I did this myself quite a long time ago with a bench harness and the MAF/ IAT in a pot of water on a hot plate.


02 F auto LS7 IAT.hpt

[blindsquirrel]

Aren't there only two thermistors GM used, 100K & 50K (and that, only on later stuff)? For the longest time there was only 100K for everything, whether it was a standalone IAT or IAT in the MAF or ambient temp or coolant temp...

[68camaroLS6]

I have it.

I did this myself quite a long time ago with a bench harness and the MAF/ IAT in a pot of water on a hot plate.


02 F auto LS7 IAT.hpt

Thanks Alvin, are you still using the same values?

[Alvin]

Yes

[68camaroLS6]

Yes

Thanks Alvin👍🏻

[Pitbull]

I have it.

I did this myself quite a long time ago with a bench harness and the MAF/ IAT in a pot of water on a hot plate.


02 F auto LS7 IAT.hpt

Thank you Alvin, this absolutely works wonders.