I have the FuelX Pro+ and K&N filter. It definitely makes the bike run better without staggering but it only operates in low/mid rev range. I still think you need a new map to get top end.
https://www.24mx.se/product/handskydd-twenty-vapor_pid-PM-0052642
It’s this model. They work great but you have to move the levers one finger to the center of the bike.