As a FYI, the OBD - SO1 is for 2017 and earlier models only; and it works with many Suzuki's. It is not compatible with the 2018 & newer as Suzuki updated the ECU. Per Atilla at Healtech, we may see the updated version this year. Otherwise $130 is a great price. I have one for my '16 Bandit and it has paid for itself.
I just checked on the Healtech site and there is only one version (S01).
Their compatibility list only includes 2015 and 2016 models nothing after that.
However I found this via a retailer site ( GSX-S1000 /F /A /FA (2015-2016), GSX-S1000S Katana (2019-2021) . That implies the Katana has the earlier ECU ?
Looks like I will be selling mine now in the UK as I've changed my bike for a 2021 model.
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