Link G4 Plus Software Tutorial: Using the Quick Tune Function
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Using the Quick Tune Function
03.45
| 00:00 | - The quick tune function allows the fuel table to be automatically tuned to match the numbers in the AFR/lambda target table. |
| 00:08 | This requires a wideband sensor to be installed and configured on an analog input channel. |
| 00:13 | Quick tune can be activated by pressing F10 or by selecting it from the tuning menu here. |
| 00:19 | This will open a new window which displays the measured AFR and the target AFR at any point in the fuel map. |
| 00:26 | Depending on the units selected, quick tune will display in either AFR or lambda. |
| 00:32 | Before we use the quick tune function, we need to configure the system by clicking on the show settings here. |
| 00:38 | This opens a window which shows all of the quick tune settings. |
| 00:43 | We can select which fuel table the quick tune adjustments will be applied to. |
| 00:47 | In this case we only have one fuel table so this is our only option. |
| 00:52 | If you have two wideband sensors installed you can select which sensor to use or use the average value of the two. |
| 00:59 | Tune ahead will copy the tune cell to other cells which can speed up your tuning. |
| 01:05 | You can select where you want the tuned cell to be copied to if you use this function. |
| 01:10 | Tune ahead trim will increase the value of the copied cells by this percentage. |
| 01:15 | This is designed to help prevent the engine going lean as you increase load and RPM. |
| 01:20 | The filter setting applies a filter to the wideband input which is useful if the wideband value is unstable. |
| 01:26 | A higher number applies more filtering while a value of one will disable filtering. |
| 01:31 | Precision defines how close the measured air/fuel ratio needs to be to be considered tuned. |
| 01:36 | If this is set to 0.1, then the allowable tolerance will be 0.1 +/- the target AFR. |
| 01:44 | For example, if we're targeting 14.7 the tolerance would be 14.6 to 14.8. |
| 01:52 | Time in cell centre defines how long the ECU must be in the centre of a cell before the quick tune operation can occur. |
| 01:59 | This eliminates the chance of transient enrichments affecting accuracy. |
| 02:03 | Max auto attempts is the number of attempt that the ECU will make at tuning a specific cell. |
| 02:10 | This will usually take two to three attempts. |
| 02:13 | To make sure we are accurately tuning the correct cell, quick tune includes a load and RPM centre tolerance. |
| 02:20 | This is how close to the centre of a cell we need to be for the auto tune to function. |
| 02:26 | Next we have lockouts for maximum and minimum RPM and load. |
| 02:30 | This lets us control the region of the map we want the auto tune to work across. |
| 02:35 | We also have an ECT lockout which prevents the quick tune from functioning while the engine is warming up. |
| 02:42 | Lastly we can set the range of the gauge display for better resolution. |
| 02:46 | Once we have adjusted the settings we can close the settings again. |
| 02:52 | We can use the quick tune in two different ways. |
| 02:55 | By clicking manual mode, we can drive the car into each cell and click tune cell or press F10 each tie we want to tune a cell. |
| 03:04 | To the left, the ECU will tell us if we are in the centre of a cell and ready to tune and it will also tell us when the target is reached. |
| 03:12 | If there is still a discrepancy between the target AFR and our measured AFR in a particular cell, the F11 key can be used to restart the tuning process. |
| 03:23 | Auto mode works the same way but the ECU will begin tuning every time you're in the centre of a cell. |
| 03:29 | This lets you simply move around the fuel map and the ECU will make the necessary adjustments. |
| 03:35 | When used correctly, quick tune can be a valuable tool to help speed up your tuning process, improving both accuracy and precision. |
