I have the Kissan modulater (with my halogen bulb) and my Cree LED headlights just arrived today. I'll fit the LED bulbs this weekend and let you know what happens.

Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge