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Can I use injector1 instead of ignition1 with Plex for individual cylinder detection?

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The instruction manual seems to indicate otherwise but an old post here with a comment from Andre indicates this may be possible. Anyone tried this? I also happen to be setting this up on a Honda B Series.

Here’s a link to the old post: https://www.hpacademy.com/forum/webinar-questions/show/plex-knock-monitor-on-honda-b-series

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