@@wouzeleflouss1485 if you get like a sport malossi style mesh filter then they have no air filter oil on them. You maybe gain a bit more power but the engine sucks dust through the non oiled filter into the engine. If you get an original Piaggio air filter then it is already oiled. Of course you can buy a sports air filter and for example a Motul air filter oil and spray it in a plastic bag with the oil filter spray. You would have to use a lot. Better an original one.