if you're using a std carby i believe you raise the needle???? im not completely sure... (its late, im a lil drunk and i havent used the std carby in ages!) just keep an eye on your plug and listen to the motor rev out and you should be able to get an idea wether itys running lean or rich.... and rich works very poo with a fatboy...
or if you have a del rep just go smaller!! just not to dry...
i've seen a std cag work extremely well with the fatboy and std carby better then what ive seen the fatboy run with the 14/4 rep... so i'd keep toying with your jets/needle if your using the std carb and you should come out a winner... compared to the std pipe atleast
still doesnt compare to the jetpro rep on a std...
but realistically... the fatboy will work better with a pro cag motor with an adjustable clutch
and if all else fails.... put your std pipe back on until you upgrade to a jetpro rep
