My electra glide would sometimes "sneeze" back through the carb usually when downshifting coming to a stop or upon accelerating after the stop... sometimes bad enough to kill the motor. I sent my stock CV carb off this winter to Dakota Kid Carbs and since its been reworked I have not had it sneeze once in 1500 miles. The throttle response is better, gas mileage is better, and I didn't have to do any jetting myself...I just told him what I was running and he set it up for me...told me in a note not to touch anything until I tried his setup first.
