KTuner.com

Is the tuner available for 2020 civic si? I am really only interested in getting rid of the rev hang the rest is just cream.has the rev hang issue been adjusted to work smoothly with our cars? I don’t want to have to mess with other peramiters and just put up with well it’s better than before. Does it really do the job?

It is. That ECU is listed on the Si application page. There is a rev hang disable option available in all of the tunes.