Do I need to change jets??

[Pieter DR]

I rebuild my bike(suzuki Dr600) and fitted a wiseco piston and a full cowley exhaust.Otherwise the motor is stock.
My Question: Do I need to change the jet in the carb and if I have to change it by how much?
Thanks

 

[Manic]

 

[Pieter DR]

 

[Manic]

 

[JamesXRV]

 

[Pieter DR]

 

[ratrap]

 

[wrench]

 

[Pieter DR]

 

[Pieter DR]

 

[lecap]

 

[JamesXRV]

 

[Pieter DR]

 

[JamesXRV]

 

[Pieter DR]

 

[ratrap]