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View Full Version : Logging IAT/MAT (Manifold air temp) on stock ECU


scheides
01-18-2009, 07:34 PM
Not long ago I had my IM off while doing a headgasket, so I took the opportunity to tap it and install a GM IAT sensor.

Using a hack from evoM, I can now log manifold air temp on the stock ECU using a GM IAT sensor. Works great! This will be an invaluable asset for tuning, and combined with my 3-bar map sensor, guess what's next? :)

http://farm4.static.flickr.com/3444/3207497509_5e887fb609.jpg

Log results from a good 3rd gear pull:
http://scheides.com/misc/pics/evo/MAT-test-24Fambient.JPG

Orig info:
http://forums.evolutionm.net/ecuflash/389956-patch-how-96530006-mat-logging.html

Super Bleeder!!
01-18-2009, 07:53 PM
That is super cool. Now you'll know exactly how well your fmic is doing its job all the time.

The more data the better!

Kracka
01-18-2009, 07:54 PM
Definitely cool getting this going today! Excited to get mine setup too.

scheides
01-19-2009, 08:37 AM
I did some logging on the way into work this morning. DAMN THIS IS AWESOME! Not only can I log maf temp, rpm, timing, coolant temp and knock out of the box, but with all these hacks, I can also wideband o2, manifold pressure, and manifold air temperature. All I need now is some dyno time! :)

Andrew7dg
01-19-2009, 06:26 PM
You know what is also fun?

Playing with water/methanol injecton and watching the intake air temp change.:nod: