sdsetup
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sdsetup [2014/10/02 13:26] twdorris [Absolute Pressure] |
sdsetup [2025/10/19 07:50] (current) twdorris [Connecting the Sensors] |
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| ====== Connecting the Sensors ====== | ====== Connecting the Sensors ====== | ||
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| - | The first step is to connect your sensors to your ECU. You'll need a GM IAT sensor and an absolute pressure sensor. The following two sections list the supported sensors. A good source for the GM sensors might be [[http://www.gmpartsdirect.com/|GM Parts Direct]]. We also really like the [[http://www.eficonnection.com|EFI Connection]] for GM connectors. | ||
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| - | For additional wiring and/or pinout information, please refer to our [[ecuwiringinformation|ECU Wiring Information]] page. | ||
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| - | **NOTE:** Keep in mind that we do have the compatible [[http://www.ecmtuning.com/product_info.php?cPath=28&products_id=47|Omni 4-bar MAP sensor]] and [[http://www.ecmtuning.com/product_info.php?cPath=28&products_id=49|GM IAT sensors]] available directly off our website. You can order them individually or you can get a [[http://www.ecmtuning.com/product_info.php?cPath=28&products_id=50|bundled discount]]. We also have a plug and play [[http://www.ecmtuning.com/product_info.php?cPath=26&products_id=52|SD harness]] too. | ||
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| + | The first step is to connect your sensors to your ECU. You'll need a GM IAT sensor and an absolute pressure sensor. The following two sections list the supported sensors. A good source for the GM sensors might be [[http://www.gmpartsdirect.com/|GM Parts Direct]]. We also really like the [[http://www.eficonnection.com|EFI Connection]] for GM connectors. | ||
| + | For additional wiring and/or pinout information, please refer to our [[:ecuwiringinformation|ECU Wiring Information]] page. | ||
| + | **NOTE:** Keep in mind that we do have the compatible [[https://www.ecmtuning.com/product_info.php?cPath=28&products_id=47|Omni 4-bar MAP sensor]] and [[https://www.ecmtuning.com/product_info.php?cPath=28&products_id=49|GM IAT sensors]] available directly off our website. You can order them individually or you can get a [[https://www.ecmtuning.com/product_info.php?cPath=28&products_id=50|bundled discount]]. We also have a plug and play [[https://www.ecmtuning.com/product_info.php?cPath=26&products_id=52|SD harness]] too. | ||
| + | **NOTE 2**: As of 20251019, Documentation on the pin-out of the Omni 4-bar MAP sensor is very confusing on the web because so many places are posting flat out *WRONG* information and it's starting to spread. So the image below is intended to answer once and for all what the pins map to. | ||
| + | {{:omnipower-4bar-gmmap-pinout.png?direct&512x683}} | ||
| ===== Air temperature - GM IAT/AEM IAT ===== | ===== Air temperature - GM IAT/AEM IAT ===== | ||
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| - | Although we can't possibly document all the different combinations of MAP sensors going to all the different ECU inputs, we will at least document the "typical" case of installing our GM-style Omni power 4-bar sensor to the car's baro input. If you have our [[http://www.ecmtuning.com/product_info.php?cPath=26&products_id=52|SD cable]] then, of course, you can just plug it straight up; no wiring or soldering required. But if you do not, then you'll have the green pigtail shown in [[http://www.ecmtuning.com/images/gmbundle.jpg|this image]]. | + | Although we can't possibly document all the different combinations of MAP sensors going to all the different ECU inputs, we will at least document the "typical" case of installing our GM-style Omni power 4-bar sensor to the car's baro input. If you have our [[https://www.ecmtuning.com/product_info.php?cPath=26&products_id=52|SD cable]] then, of course, you can just plug it straight up; no wiring or soldering required. But if you do not, then you'll have the green pigtail shown in [[https://www.ecmtuning.com/images/gmbundle.jpg|this image]]. |
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| ====== Configuring the Software ====== | ====== Configuring the Software ====== | ||
| - | First, make sure you have installed the latest version of our application off our [[http://www.ecmtuning.com/downloads.php|downloads page]]. You'll want at least v3.18.182. Anything older than that may not even connect with your ECU. | + | First, make sure you have installed the latest version of our application off our [[https://www.ecmtuning.com/downloads.php|downloads page]]. You'll want at least v3.18.182. Anything older than that may not even connect with your ECU. |
| Once you have installed the latest software, you can enable speed density operation by defining three things: \\ | Once you have installed the latest software, you can enable speed density operation by defining three things: \\ | ||
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| ===== MAP Sensor Location and Type ===== | ===== MAP Sensor Location and Type ===== | ||
| - | {{ http://www.ecmtuning.com/images/forums/sddata/sdmaploc.png}} | + | {{ https://www.ecmtuning.com/images/forums/sddata/sdmaploc.png}} |
| Because you can connect your MAP sensor to any number of ECU inputs, you have to tell the ECU where it can find this sensor in order to use it for SD operation. You do this on the ECU Inputs tab in the "Pin Assignments for ECMLink Functions (ECU-side)" area. | Because you can connect your MAP sensor to any number of ECU inputs, you have to tell the ECU where it can find this sensor in order to use it for SD operation. You do this on the ECU Inputs tab in the "Pin Assignments for ECMLink Functions (ECU-side)" area. | ||
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| ===== BaseMAF Type ===== | ===== BaseMAF Type ===== | ||
| - | {{ http://www.ecmtuning.com/images/forums/sddata/sdbasemaf.png}} | + | {{ https://www.ecmtuning.com/images/forums/sddata/sdbasemaf.png}} |
| Tell the ECU to ignore incoming MAF data and calculate it from speed density data instead. You do that on the MAFComp tab by selecting "Speed Density" as your Base MAF type. | Tell the ECU to ignore incoming MAF data and calculate it from speed density data instead. You do that on the MAFComp tab by selecting "Speed Density" as your Base MAF type. | ||
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| ===== Engine Displacement ===== | ===== Engine Displacement ===== | ||
| - | {{ http://www.ecmtuning.com/images/forums/sddata/sddisplacement.png}} | + | {{ https://www.ecmtuning.com/images/forums/sddata/sddisplacement.png}} |
| The final step is to set the engine displacement. On the Speed Density tab, there's a text box where you need to enter your engine displacement. The ECU uses this information to correctly calculate airflow. More information on this process is outlined in the [[sd101|SD101 page]]. | The final step is to set the engine displacement. On the Speed Density tab, there's a text box where you need to enter your engine displacement. The ECU uses this information to correctly calculate airflow. More information on this process is outlined in the [[sd101|SD101 page]]. | ||
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| ===== Airflow Smoothing ===== | ===== Airflow Smoothing ===== | ||
| - | {{ http://www.ecmtuning.com/images/forums/sddata/sdsmoothcb.png}} | + | {{ https://www.ecmtuning.com/images/forums/sddata/sdsmoothcb.png}} |
| Mass airflow sensors used by the DSM ECU tend to require some "smoothing" or "averaging" inside the ECU of their output signal. This type of averaging actually delays the signal used by the ECU (since it's averaged out, a real change in airflow takes a little longer to register inside the ECU). Fortunately, mass airflow sensors respond very quickly to changes in airflow rate, so this delay isn't a problem. | Mass airflow sensors used by the DSM ECU tend to require some "smoothing" or "averaging" inside the ECU of their output signal. This type of averaging actually delays the signal used by the ECU (since it's averaged out, a real change in airflow takes a little longer to register inside the ECU). Fortunately, mass airflow sensors respond very quickly to changes in airflow rate, so this delay isn't a problem. | ||
sdsetup.1412270796.txt.gz ยท Last modified: 2014/10/02 13:26 by twdorris
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