I have used and still use Holeshot for a lot of product and advice. To the best of my knowledge, the only way way to kill the FI light with this setup on the 2018 & 2019 is to flash the ECU shutting off the O2 Sensor. Check out Dano's (ECU Flashing
) for mail in flashing services - many here have used him. This is not an issue on the 2016 & 2017 models.