When I recently had my 2015 865 Bonneville dyno tuned, they were able to just turn off the O2 sensor setting in the stock computer.
I removed the sensors and plugged the pipes, then trailered the bike to them. I probably could've rode in but I had also modded my air intake and did not want to risk burning an exhauast valve.
Thai Bonnie now screams in parralel twin ecstacy when accelerating and growls like a big cat on decelleration.
. But I digress...
Air injection was removed by the dealer (at my request) before first start up to preserve head pipe chrome with cooler exhaust, and provide easier access to spark plugs.
The Triumph emission controls / ecu is pretty user friendly. It has been my hope that RE would follow suit so we don't have to buy a PC-V just to make improvements.