For over a year I've been running DDM Tuning Saber LED (H7, 50W). They have been an improvement over the aftermarket HIDs I had installed before.
The LEDs are a drop-in solution (replacing the stock halogen bulbs) and required minor fitting of the bulb holders. It was a bit of a squeeze but everything fit and I haven't had any issues with them at all.
I'm not sure if it would be the same process with a stock bi-xenon setup. Then again, if I had the stock bi-xenon setup I probably wouldn't convert to LED.
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2008 Z4 3.0si Coupe
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