What age is your dt? Mines a 2000 dtr and it has a big round bulb not one of them in it dont know if it matters but just thought i'd let you know just incase its the wrong bulb.
yeah mines the same as yours, went down to the shop to get a normal bulb instead cuz thats not the blue im after, i want a HID blue not a blue blue. i dont see how that bulb will fit tbh!
no mate but just said the same to pleb, he had the same problem he bought a 55w bulb and he lost like 10 mph, he took the bulb out and everything went back to normal its nice having a stronger bulb but it does suck juice, best to get a better headlight unit than standard