I have two sound cards, one for game audio and one for my bass shaker. I spent a good deal of time in the game settings but could not find a way to enable it. For example, in the iRacing settings, there is section for LFE where you can specify the sound card to use for the bass shaker. iRacing has a specific audio channel for low frequencies that bass shakers can use and I am wondering if LFS does also? Thank you in advance.

The app Simhub has bass shakers, I believe it will support a telemetry like this since the arduino dashboard system is supported too..

give it a try and say what are the results

Thank you for the suggestion. I have heard of SimHub but never used it. Are you saying that Simhub will intercept the appropriate LFE channel from LFS?

You can use outSim to send telemetry to simhub, there you can do what ever you want with that data.