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I was using a dyno*** adjustable needle in my CV carb. I put this CVP needle in and wallah! Smooth and crisp throttle response! Something my bike has never had. Solid upgrade and made a HUGE difference over the dynojet needle.
Way better than grinding stock or shimming. With cam exhaust breather runs better than FI, no flat spots etc.
Stock twin cam 88. This needle makes the stock one look like a tree trunk. I put this and a 48 jet in and the bike jumps when you twist the throttle at 30mph. No hesitation and no pop on decel. Twist it at 70 and it will get to 90 respectfully where before, you heard the exhaust but the speedo didn't move. To do better, you would have to change cams.
Works excellent no more carb pops.
Best CV needle out there, bar none. The old Sportster needle trick worked fine years ago when there were really no other alternatives. Now, I won't use any other needle in my CV's except this one from CVP. It's that good.