upjetting peugeot speedfight 2

hey guys kinda new to this so have to bare with me lol,
basically, had my ped for nearly a year, its had nothing done to it, all standard apart from the technigas exhaust which was already on it when bought and 'apparently' de-restricted.
i bought a new K & N style air filter and tried to put it on but wont work, been told to upjet it to i went out and bought an 86? but not sure weather or not this will be to big as i dont know the original size jet, any info would be much appreciated

 

if your speedy is a 50cc the standard jet is (i think) 67, on my 100cc speedy the standard jet is 83 so it might be ok

 

it wont be ok, its waay off.
You will need to go up around 2-4 jet sizes to run a k&n filter.

 

hmm my mates runs ok and its same, k&n with 83 jet, but his has performance pipe, 70 kit and rollers

 

And this guys doesnt have a 70 kit