I always had trouble with lean carb issues in cool weather. even with jet changes, bike would run good all summer, but soon as cool weather, it would stumble. changing to the velocity needle fixed all that. Spark plugs have better color now too, bike runs good at all RPM. Try it, its easier than shimming the stock needle,change it and your done.

Since I bought my bike 3 years ago (2000 sportster) it had issues with carb popping. This needle fixed the issue, and my bike runs better than ever. No more coughing, and better response off the throttle. Definitely worth the money.

Just installed the CVP needle on a Electra Glide I just picked up, has SE slip-ons w/baffles and air cleaner with a dyno-j** kit, plugs looked nasty w/soot, clocked only 25mpg. Terrible over rich spot at 2-2200rpm. Put the Velocity Emulsion Tube in as well this needle, lowered the pilot from 48 to 45 and upped the main jet from 185 to 190 jet....it runs 10x better smooth all the way low end grunt and top end.