[TXBlazer]

i would not think that the difuser should make that much of a dffernece; do you know if the two kits have the same k rating? 6000k; 8000k etc? and where they installed at the same time and what are you both doing about the DRL's

You still did not answer the question....are they the same Kelvin??? 6k or 8k...the 6k will be more closer to white and the 8k will be more blue and may look not as bright with the blue hue they produce.