Replacing the airbox on my zip

wanted to ask i have a 17.5mm carb at the moment and it has a standered air box on it . i want to buy http://www.pedparts.co.uk/product/97/malossi-race-air-filter-covered this filter but what size jets would i need ?
thanks

 

70 or so i guess.... tbh dont waste your time or money itll just go slower

 

As ramo said, leave the std airbox on if you want it to run properly.

 

keep the standard airbox you will go slower only need open air filters for racing cylinders

 

ok . thank you for your input

 

guyz above are right...the only thing that it will do is more noise, no power... i was trying to do that to my scoot

 

oh right cheers