Hi all, I just installed a K&N RC-1980 air filter with existing unmarked after market exhaust. I rejetted the carb
with a barons kit 170 main
, clip on the 4th groove from blunt end, and washers installed as indicated on the directions and how they were on the existing needle. I tested this with the PMS
at 2, 2.5, and 3 turns out. AIS
is removed, and the port is capped on the manifold. I tested for air leaks around the carb and everything is fine.
I would like to fine tune to get rid of the vibration at mid throttle, or cruising speed of 50-55 in 4th, and 65 in 5th. I also experience a slight stutter at low rpms
in gear like making a turn in 2nd. I can kick it down to 1st and be fine. Both of these seem a little worse after the install and rejet. The vibrations stay when I pull the clutch lever in and throttle at same position. The vibration go away when I roll off the throttle.
I searched and read many posts, but all that did was give me conflicting information. I seek the advice of the experts to tell me what direction I should go to help clear up these two issues. I am aware that vibrations are expected, and the whole harmonics thing, but it makes my fingers numb. I was able to tune my V-Star to run with minimal vibration at my desired cruising speeds, so I was hoping to do the same with this.