I just picked up a 16' 1190R and am struggling with all the air filter options available. I've searched the forums and read everything I can find (even watched youtube videos) to improve the air filter. Each strategy I read about seems better than the one before it and I don't know which way to go. I'm leaning towards the Rotweiller kit now, but what stage is necessary and is it worth the extra $$ compared to other options? I currently ride mostly street with the 1190 (DR650 for trails) but plan more offroad use once I get this figured out. Any advice or experiences are appreciated, Thanks!!!