I have a 2001 1200 custom. The bike had a aftermarket air cleaner when I purchased it. I just added drag pipes to it and am not fimiliar with how to rejet it. I have a good understanding of carburetors so it's not the actual changing of the jets I need help with as much as tuning and picking the right jets for the bike.
There is a good sticky over on xlforum.net about carb jetting. How do your plugs look? Any carb popping? Acceleration issues?
What jets do you have now? You may not need anything changed, maybe just adjust your mixture screw. I don't have any acceleration problems but lost some throttle response with the new pipes and it does sound like it pops through the carb every once and a while
John
Not sure about plugs or current jets just recently bought the bike. And I replaced the plugs around the same time as the pipes.
Sounds like mixture screw can be turned out a wee bit. I think if you turn out more than 3.5 turns it indicates you may want to go up one size with your pilot jet.