jet sizes for minarelli with stage6
 

I have a minarelli with stock carb 15mm and im getting a stage 6 pro replica pipe.just wondering if some one could give me a starting point on the main jet.im using my stock air filter and pollution and egr are removed.some tell me with stock pipe you don't need to change the main

usually an aftermarket pipe will run richer, since there will be more gases sent back into the jug by the pipe

every one is saying to upjet even the company