Help: s.d. and iat calibration and set-up

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Nov 8, 2010 | 05:34 PM

mxguy1286

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From: pa

Help: s.d. and iat calibration and set-up

Ok so im pulling my hair out with all the reading I have done. I have my car running really well with 94170015 and the s.d. patch and I have my iat temp input to the fuel temp sensor. The problem I am having is I cant find the definitive answer to a few questions.

1. My "SD MAT scaling for iat scaling" has no values in the r.h. column for the temp.

I dont know what to make of that. It also will not allow me to adjust the r.h. column to even try input values from a different s.d. rom.

2. I dont know if my ecu is reading iat. correctly. I have tried a few different ways to log iat and im confused on how I am suppose to be doing this.

I added this to my evoscan to try and log mat.
<DataListItem DataLog="Y" Color="" Display="Manifold Air Temp" LogReference="MAT" RequestID="09" Eval="1.8*x-40" Unit="deg F" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="-40" GaugeMax="300" ChartMin="-40" ChartMax="300" ScalingFactor="1" Notes="" />
But all it reads is like 200+ degrees. The weird thing is that if I log "air temperature" in evoscan the temps seems to be about what they should be. And if I disconnect my gm iat I get a cel and the "air temperature" goes to -88.

Any input would be great guys!

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Nov 8, 2010 | 07:02 PM

drifterific

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From: wa state

I am using these setting for the voltage for the GM IAT sensor. (Also make sure you are developer mode, it looks like you are but I would double check) Also are you using OE for the fuel temp acd?

PHP Code:


			
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Last edited by drifterific; Nov 9, 2010 at 01:16 AM.

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Nov 8, 2010 | 09:09 PM

mxguy1286

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From: pa

Im under devloper and can not edit the r.h. side for some reason. No adjustments will show up and no numbers can be put in. And yes I have the fuel temp acd set to 0E. An ideas why it wont allow the r.h. side to be edited on the iat scaling?

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Nov 9, 2010 | 01:15 AM

drifterific

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From: wa state

I just downloaded a fresh copy 9417 SD from the V7 thread and I was able to edit the values of both sides of the scalings. Are you running a pre-patched rom or one that you patched yourself?