# How can I add additional CAN data (such as flex fuel ethanol content) from my Link ECU to RealDash via CAN Analyzer?

**URL:** <https://forum.realdash.net/t/how-can-i-add-additional-can-data-such-as-flex-fuel-ethanol-content-from-my-link-ecu-to-realdash-via-can-analyzer/10045>\
**Category:** Link\
**Created:** [March 15, 2026, 6:47pm UTC](https://forum.realdash.net/t/how-can-i-add-additional-can-data-such-as-flex-fuel-ethanol-content-from-my-link-ecu-to-realdash-via-can-analyzer/10045 "2026-03-15T18:47:40Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![adamk](https://forum.realdash.net/letter_avatar_proxy/v4/letter/a/3bc359/32.png) [@adamk](https://forum.realdash.net/u/adamk)\
**Post date:** [March 15, 2026, 6:47pm UTC](https://forum.realdash.net/t/how-can-i-add-additional-can-data-such-as-flex-fuel-ethanol-content-from-my-link-ecu-to-realdash-via-can-analyzer/10045/1 "2026-03-15T18:47:40Z")

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I am currently using RealDash with a CAN Analyzer connected to my Link ECU and it is working correctly. How can I add new CAN parameters, specifically flex fuel ethanol content, so they can be displayed in RealDash?

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**Author:** ![realdashdev](https://forum.realdash.net/user_avatar/forum.realdash.net/realdashdev/32/6_2.png) [@realdashdev](https://forum.realdash.net/u/realdashdev)\
**Post date:** [March 19, 2026, 8:02am UTC](https://forum.realdash.net/t/how-can-i-add-additional-can-data-such-as-flex-fuel-ethanol-content-from-my-link-ecu-to-realdash-via-can-analyzer/10045/2 "2026-03-19T08:02:27Z")

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Requires two steps:

1. Configure your value to be transmitted to CAN in PCLink.
2. Create custom CAN XML file for RealDash that describes how your new value is packed into the CAN stream.

See RealDash CAN XML documentation here:

[RealDash-extras/RealDash-CAN/realdash-can-description-file.md at master · janimm/RealDash-extras](https://github.com/janimm/RealDash-extras/blob/master/RealDash-CAN/realdash-can-description-file.md)

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<div class="post-metadata">

**Author:** ![Cableline01](https://forum.realdash.net/user_avatar/forum.realdash.net/cableline01/32/2770_2.png) [@Cableline01](https://forum.realdash.net/u/Cableline01)\
**Post date:** [March 19, 2026, 9:24pm UTC](https://forum.realdash.net/t/how-can-i-add-additional-can-data-such-as-flex-fuel-ethanol-content-from-my-link-ecu-to-realdash-via-can-analyzer/10045/3 "2026-03-19T21:24:00Z")

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Don’t know if this helps this is what I have for ECS for a 2018 BMW running a content sensor.

```
  <frame id="0x0EC">
  <value name="ECA%new" offset="0" length="1"></value> <!-- ECA sensor % -->
  <value name="ECA Temp" offset="1" length="1"></value> <!-- ECA sensor Temp -->
</frame>

```