# BMW S54 Trigger Setup

**URL:** <https://community.ecumaster.com/t/bmw-s54-trigger-setup/2979>\
**Category:** EMU PRO\
**Created:** [December 28, 2024, 7:58pm UTC](https://community.ecumaster.com/t/bmw-s54-trigger-setup/2979 "2024-12-28T19:58:46Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![Maciej.Ordowski\_ECUMASTER](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@Maciej.Ordowski\_ECUMASTER](https://community.ecumaster.com/u/Maciej.Ordowski_ECUMASTER)\
**Post date:** [January 22, 2025, 2:33pm UTC](https://community.ecumaster.com/t/bmw-s54-trigger-setup/2979/21 "2025-01-22T14:33:40Z")

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And my first suggestion about changing ‘Signal edge’ to Rising on Intake camshaft was wrong. According to the latest scope file Falling edge would be better.

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**Author:** ![Gareth](https://avatars.discourse-cdn.com/v4/letter/g/ba8739/32.png) [@Gareth](https://community.ecumaster.com/u/Gareth)\
**Post date:** [January 22, 2025, 4:37pm UTC](https://community.ecumaster.com/t/bmw-s54-trigger-setup/2979/22 "2025-01-22T16:37:21Z")

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Hi, Thank you very much, its working. I did change it to Rising and is working ok. Should I change it back and do the VVT Tuner again?

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**Author:** ![Maciej.Ordowski\_ECUMASTER](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@Maciej.Ordowski\_ECUMASTER](https://community.ecumaster.com/u/Maciej.Ordowski_ECUMASTER)\
**Post date:** [January 23, 2025, 8:47am UTC](https://community.ecumaster.com/t/bmw-s54-trigger-setup/2979/23 "2025-01-23T08:47:28Z")

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With Falling edge camshaft tooth would not cross a zero crank tooth, however, it would still work with Rising edge.  
Apart from that, it would be better to run VVT Tuner again on both camshafts. Sync problems could impact on the calculations made before.

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**Author:** ![Greg](https://avatars.discourse-cdn.com/v4/letter/g/71c47a/32.png) [@Greg](https://community.ecumaster.com/u/Greg)\
**Post date:** [January 23, 2025, 10:54am UTC](https://community.ecumaster.com/t/bmw-s54-trigger-setup/2979/24 "2025-01-23T10:54:19Z")

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I did had an issue in past on s54 was loosing one tooth on higer rpm.  
i think i have replaced the sensor and was fine

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<div class="post-metadata">

**Author:** ![Gareth](https://avatars.discourse-cdn.com/v4/letter/g/ba8739/32.png) [@Gareth](https://community.ecumaster.com/u/Gareth)\
**Post date:** [January 23, 2025, 3:55pm UTC](https://community.ecumaster.com/t/bmw-s54-trigger-setup/2979/25 "2025-01-23T15:55:47Z")

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Hi, I did try a different sensor earlier on in this process but no luck, it was changing the Pulldown to None on the crank sensor which fixed it.

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