Just pop in here every so often but do not have the time to commit to getting that involved.
What I will say is I am working on/off in free time with new effects based on some past efforts I shared in the group chat but further developing these with ACC on PC.
It could be possible with those, to have them adapted to work with GT7.
I wont say for certain but while I never got around to doing a thread in covering this approach in detail, (what I originally wanted to do) I still feel their is a good need in the community for a solution that is affordable with nice effects as still today the topic is one of many ideas and methods others use or recommend.
The newest Dayton BDS exciter has really impressed me in its performance.
Also as I linked in a thread over at RD forums, I shared a newish amp that is available that can offer 6 channels of amplification.
One other nice feature however is that you can easily with a switch on the amp have it output game audio into your transducers/exciters instead of say Simhub effects. So basically any games or music on it can be sent to your tactile and it has bass controls to maybe help somewhat with that.
See
Here