2006 HD 1200XLC- Throttle response?

i have vance hines full exhaust, as well as their air cleaner. my bike is carbuerated. whenever i take off their is terrible response- sometimes sputters and have to let clutch out extremely slowly to let it catch up.. what is wrong with it? how can i fix this?2006 HD 1200XLC- Throttle response?
its gotta be runnin rich. i watch the spark plugs in mine but u cud get a wideband gauge to monitor fuel/air mixture at all times,but i watcht he plugs, black is too much gas/not enuf air, and a white plug says im gettin too much air/ not enuf gas.so u can go from there and give it more or less air or gas til it starts doin rite2006 HD 1200XLC- Throttle response?
if it just started to happen and the exhaust and other mods have been in place before this started then I would be looking at my intake manifolds for leaks and checking my accelerator pump to make sure it works correctly. Start the bike and spray W.D.40 around the intake manifolds.If it gets sucked in you have a leak. Take off the air cleaner and give the throttle a quick hard pull.You should see a stream of fuel shoot right down the middle of the carbs throat. If that accelerator pump is not operating properly it will stumble and even stall.Its purpose is to shoot a bunch of extra fuel into the motopr and prevent that problem.2006 HD 1200XLC- Throttle response?
sounds like the air/fuel mixture needs to be readjusted or the size of the jets are wrong for your application, basically you need a tune up.