Yesterday I installed a S&S Stealth air cleaner on my 2017 Scout. There is a pretty big difference between the stock air filter and the S&S. The bike sounds much deeper than stock. It was too cold to take it for a spin plus I'm waiting for a proper tune from Fuel Moto, sent them the ECU info on a Saturday. I have Crusher Mavericks and I could only find a tune for Track slip ons with the S&S air filter. Maybe it's pretty close. If I like it I may put Crushers/S&S/PVCX on my wife 60.