The beam is so much better than the filament setup, it's damn close to a car headlight. I use 1156-R24 for the taillights. They are from superbright leds also. With those you don't need any rectifier capacitor mod, they have them built in to the bulb already. And they look sick in the treats "Lexus" taillight. At iddle the headlight bulb does go out, but it's back with just a hint of throttle. I'm still experimenting with different capacitor values, it seems the larger the value the longer they delay in responsiveness to throttle. The low end of the value spectrum brings back the flicker.