bcsoverview
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bcsoverview [2011/08/12 09:13] twdorris |
bcsoverview [2024/03/15 11:16] (current) |
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| A sample screen shot is provided below for reference in the following sections. | A sample screen shot is provided below for reference in the following sections. | ||
| - | {{ http://www.ecmtuning.com/wiki/_media/samplebcs.png }} | + | {{ https://www.ecmtuning.com/wiki/_media/samplebcs.png }} |
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| If error correction has been __disabled__, then this value is the final value the ECU is going to use and your turbo will build whatever boost it just happens to build for the given wastegate duty cycle. You can use this mode of operation during setup and dialin to find where you setup naturally needs to be to build the boost you're looking for. | If error correction has been __disabled__, then this value is the final value the ECU is going to use and your turbo will build whatever boost it just happens to build for the given wastegate duty cycle. You can use this mode of operation during setup and dialin to find where you setup naturally needs to be to build the boost you're looking for. | ||
| - | If error correction has been __enabled__, then the ECU references the Boost Target table to determine (for the same RPM and gear) what boost it should be trying to achieve at that moment. It then adjusts the base duty cycle according (up or down). It tracks this adjustment with a "trim" value, similar to the short term fuel trim. The final duty cycle used by the ECU is basically: | + | If error correction has been __enabled__, then the ECU references the Boost Target table to determine (for the same RPM and gear) what boost it should be trying to achieve at that moment. It then adjusts the base duty cycle accordingly (up or down). It tracks this adjustment with a "trim" value, similar to the short term fuel trim. The final duty cycle used by the ECU is basically: |
| Final DC % = (base DC %) + WGSTrim | Final DC % = (base DC %) + WGSTrim | ||
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| Measured boost is determined from the configured MAP sensor input on the ECU Inputs tab. You MUST configure this input first before the error correction process will work. You do this on the ECU Inputs tab using the fields shown below. | Measured boost is determined from the configured MAP sensor input on the ECU Inputs tab. You MUST configure this input first before the error correction process will work. You do this on the ECU Inputs tab using the fields shown below. | ||
| - | {{ http://www.ecmtuning.com/wiki/_media/mappinassignments.png }} | + | {{ https://www.ecmtuning.com/wiki/_media/mappinassignments.png }} |
| The ECU will compare current boost reported on the specified pin using the specified MAP sensor scaling against the target boost pulled from the Boost Target table to determine a boost "error". How far off the current boost is from the target boost will determine how much error correction is applied to the current duty cycle (which may have been corrected already by some amount from a previous pass through this correction process). | The ECU will compare current boost reported on the specified pin using the specified MAP sensor scaling against the target boost pulled from the Boost Target table to determine a boost "error". How far off the current boost is from the target boost will determine how much error correction is applied to the current duty cycle (which may have been corrected already by some amount from a previous pass through this correction process). | ||
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| When this box is checked, you'll want to change the WGSGear table in Direct Access on the WGSMisc tab. The default values are based on an internal (raw) ECU value named WGSGearRatio. If you want to base gear selection on speed instead, then you'll need to change this table to reflect values from the internal ECU variable named LatestSpeed. The following screen shot shows the WGSGear tab in direct access. | When this box is checked, you'll want to change the WGSGear table in Direct Access on the WGSMisc tab. The default values are based on an internal (raw) ECU value named WGSGearRatio. If you want to base gear selection on speed instead, then you'll need to change this table to reflect values from the internal ECU variable named LatestSpeed. The following screen shot shows the WGSGear tab in direct access. | ||
| - | {{ http://www.ecmtuning.com/wiki/_media/wgsgear.png }} | + | {{ https://www.ecmtuning.com/wiki/_media/wgsgear.png }} |
| The values shown above are the default gear ratio values provided in ECMLink. These values would select Gear 1 when WGSGearRatio is below 158. Then it would select Gear 2 when WGSGearRtio is between 158 and 248. Then it would select Gear 3 anytime WGSGearRatio is above 248. | The values shown above are the default gear ratio values provided in ECMLink. These values would select Gear 1 when WGSGearRatio is below 158. Then it would select Gear 2 when WGSGearRtio is between 158 and 248. Then it would select Gear 3 anytime WGSGearRatio is above 248. | ||
bcsoverview.1313154810.txt.gz · Last modified: 2011/08/12 09:13 by twdorris
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