Motorcycle Repair: Rejetting stock carb, white brothers porker pipes, drag pipes

Question
I have 1991 xl 883 with a stock carb and screaming eagle air cleaner and 2 1/4 inch White Brothers porker pipes. The carb was rejetted when I had the pipes put on. Bike runs great! I need to change the pipes over to 1 3/4 drag pipes now.When I do this will I have to rejett the carb with a different size jett?? what are your recomendations on the stock carb being retuned with the different pipes??~ Thank you ~Ralph

Answer
You will have to test ride the bike after installing the pipes and see if you need to rejett. Your best indicator is the plugs. ride the bike and check the plugs. Black and to rich, while and to lean. There is no set jet size when you start changing things like pipes.
Good luck and happy riding
Mike