According to Morimoto, you can disable the startup sequence, but it does result in also disabling the sequential turn signals. While I'm not personally a huge fan of startup sequences (it's a bit ostentatious for my taste), the Morimotos (and newer AlphaRex Nova Series) have much less of an annoying startup than later-model BMWs, since the F150s don't have auto-leveling headlights that need to reset on startup.