Is it true that the only different between the two bulbs is the stripping on the D2R (beside the base different). Another word they are the same bulb. If they are the same, to make D2R look like D2S is basically removing the stripping of the D2R bulb. Any inputs? The reason I am asking is that I want to get more light output from my stock D2R bulb.

 

the housing for the HID bulbs in our TL's is optimized for D2R bulbs. I can't remember who, but someone put D2S bulbs in their TL.