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Mag · 08-06-2008, 11:23 AM

Luckily not much work. The RLS IC I have is the WI one and the thermocouple probe fixture happened to be the same thread (retapped earlier).

apk919, if my data is correct, I'm afraid you are correct! Time for me to download that manual.

So I ran the data. Warning. Not going to like what you see.

Notice somthing grossly wrong here? Post IC is consistantly higher than Pre... accept when the car is at high speeds, where yellow line starts to drop off below the violet line. this was at 100mph. Got flow?

When I first connected the Post IC prob, car had had the probe in the IC during idling period, there after cooled off in the IC. Pulled it out and checked temps at 31, verified with infrared. Ambient 23C. After the log run, again pulled out the post IC prob out of the IC, and sure enough temps dropped from 60C to 33, which intuitively makes sense having been heated up by air and oil blow by.

Typhoon storm tonight so a bit cooler than last time. Windy. So interestingly, when the car was still or slow moving roof temps were on par with ambient, 27C versus 23C, but with the car jamming, temps rise to 30C therebouts.

Note: both probes used are same brand, both new, wire same length, run side by side, plugged into same device, which was calibrated just before the run.

Theories why it's so hot on outlet side... heat soak from SC is my guess. May be this is why the TMAP IAT is kept where it's at.

08-06-2008, 11:23 AM	#165 (permalink)
Mag Madness... Join Date: Apr 2008 Location: Hong Kong SAR Posts: 357	Luckily not much work. The RLS IC I have is the WI one and the thermocouple probe fixture happened to be the same thread (retapped earlier). apk919, if my data is correct, I'm afraid you are correct! Time for me to download that manual. So I ran the data. Warning. Not going to like what you see. Notice somthing grossly wrong here? Post IC is consistantly higher than Pre... accept when the car is at high speeds, where yellow line starts to drop off below the violet line. this was at 100mph. Got flow? When I first connected the Post IC prob, car had had the probe in the IC during idling period, there after cooled off in the IC. Pulled it out and checked temps at 31, verified with infrared. Ambient 23C. After the log run, again pulled out the post IC prob out of the IC, and sure enough temps dropped from 60C to 33, which intuitively makes sense having been heated up by air and oil blow by. Typhoon storm tonight so a bit cooler than last time. Windy. So interestingly, when the car was still or slow moving roof temps were on par with ambient, 27C versus 23C, but with the car jamming, temps rise to 30C therebouts. Note: both probes used are same brand, both new, wire same length, run side by side, plugged into same device, which was calibrated just before the run. Theories why it's so hot on outlet side... heat soak from SC is my guess. May be this is why the TMAP IAT is kept where it's at. __________________ 91 NSX, 3.2L ITB (in progress) 93 Supra TT 95 BCNR33 GTR, 2.8L TT 00 s2000, 2.2L 08 Exige S240 Last edited by Mag : 08-06-2008 at 11:32 AM.