Hondata

Posted: **Fri Jul 18, 2008 5:57 pm**

I have put together a aftercooler setup for my JRSC. I have put a GM IAT Sensor SU109 in the blower access plate. My understanding is that I will need to understand the voltage differences between the RSX IAT Sensor and this sensor so that I can correctly read my IATs. Do you guys have a table with type of information or have you worked with a GM IAT sensor in this fashion?

Setup is a 2006 Type-s with JRSC with aftercooler at 11psi. T1 will be doing my tuning for me and we were hoping to get this information.

Thank you in advance.

Posted: **Fri Jul 18, 2008 10:48 pm**

It would be nice if a few of us could get together and build an IAT table based on using a fast reacting sensor such as that GM unit.. I'm sure the information is available (to a certain extent) in the factory manuals..

Posted: **Sat Jul 19, 2008 11:03 am**

This is what I have so far from another guy who was nice enough to share. Its only the temp differences but its a start. He has a lotus exige with a K20A and aftercooler which are outfitted with the GM IAT sensor as well.

this is what it works out at (in degree's C) using the GM AIT in place of the Honda AIT

GM Actual
88 90
86 88
84 86
80 84
78 82
76 80
74 78
72 76
70 74
68 72
66 70
64 68
62 66
58 64
56 62
54 60
52 58
50 56
48 54
46 52
44 50
42 48
40 46
38 44
36 42
34 40
32 38
30 36
28 34
26 32
24 30
22 28
18 26
16 24
14 22
12 20
10 18
8 16
6 14
4 12
2 10
0 8

Posted: **Mon Jul 21, 2008 8:05 am**

The new step is to measure the resistance of the sensor. Use ice water, boiling water, the a mixture of both to get 10 or so data points between 32 and 212 degrees. A thermocouple to measure the water temperature is desirable.

Posted: **Mon Jul 21, 2008 8:52 am**

This is how he obtained the provided #s.

tried to work it out from the resistance chart for the sender, but I could not work out reliably what the value of pull up the ECU uses to refference against...

in the end I just made up a tube to hold both Honda and GM AIT's, two ECU's to read them, then used a pack of ice and a hot air gun.

it's a little iky but if you smooth out the numbers it's usable....

Is there another sensor that might be better for us to use to get the correct #s?