Road Tuning: Inputting Wideband To ECU
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Inputting Wideband To ECU
01.56
| 00:00 | A function to look out for on either a portable wideband or a gauge is an analog voltage output that can be used to connect to your ECU or data logger. |
| 00:09 | Most widebands offer this so it's no big deal, but just make sure your preferred product can do this before purchasing. |
| 00:17 | The reason this is important is because it isn't always going to be possible to watch the AFR meter, and sometimes it can be hard to pinpoint where in the load or RPM range a rich or lean spot occurred. |
| 00:30 | Using the analog voltage output we can connect this to the ECU and configure the input as a wideband AFR sensor. |
| 00:38 | This gives us some handy options. |
| 00:40 | Firstly, most of your ECUs incorporate a quick tune or auto tune function to automatically fill the fuel map based on the input from the wideband sensor. |
| 00:51 | This can help speed up your tuning process, particularly in the cruise area area of the map. |
| 00:57 | In reality I seldom use these automatic tuning features, as I prefer to manually tune the fuel map. |
| 01:04 | Having the wideband input to your ECU, however, means we can data log it, and that is where the real power is. |
| 01:11 | This means we can make a pull in third gear for example, and then stop at the side of the road or track to check what the AFR was doing. |
| 01:19 | This adds to safety and accuracy. |
| 01:23 | It's critical here to make sure that the wideband input to the ECU reads accurately so that you know you can trust the data you're logging. |
| 01:32 | The wiring is important here, and I recommend that you run a sensor ground from the ECU all the way to the wideband meter or gauge to prevent the chances of a ground offset that can affect the accuracy of your reading. |
| 01:45 | It should be a simple task though to make sure the reading you're seeing on the meter or gauge matches the AFR on your laptop. |
