I've been looking pretty hard at the OPT7 Fluxbeam H4 LEDs. Plug and Play in the socket with no other outside parts. $100 for the pair. Has anyone tried these?
Vader--These might be really great bulbs in that they are using the latest CREE MK-R chips. Those chips have a very high efficacy rating (lumens/watt) and are capable of producing around 1700+ lumens/chip. So, their claim of 3500 lumens/bulb might be reasonable. In addition, color temp is advertised at 6000K so, if that's accurate, the color should be pure white with no or very little blue tint. I would correct you on your comment about no other outside parts. If I'm not mistaken, these bulbs do have an external driver but it should be fairly small and easy to mount. Also, it sounds like the fan housing does separate from the bulb base which is something I believe is very advantageous in retrofitting bulbs like this. Basically, you can install the bulb base and get your retaining spring back in place before twist-locking the fan housing back on. Not having installed these particular bulbs in a C14, my concerns would be how easily the rubber sealing boot can fit around the fan section and also, how well the bulb works in the reflector housing. I can about guarantee you this...if they fit in there properly and you're able to reinstall the boot, you'll have plenty of light output, far greater than stock and equal to or better than most HID bulbs. The issue with LED bulbs has not
been how bright they appear but rather, how much light they project down-the-road. Much progress has been made in the last couple of years in this regard. So, in summary, to respond to your question, there are no guarantees when it comes to retrofitting LED bulbs but this does appear to have the potential to be a good solution.