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#7: 09-04-2012, 09:24 AM
Title: Senior Contributor
Location: Bay Area, CA
Car: 09 DGM LGT Stage 0, 08 DGM Impreza
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HIDs are not a good solution for high-beams.

1) HIDs take several seconds to warm-up before reaching full brightness, this makes them un-suitable for things like flashing your brights

2) HID ballasts probably won't work well with the current Subaru DRL implementation, where the DRL is simply driven at a lower voltage.

LED lights are unlikely to be able to provide sufficient brightness to act as a true high beam. Sure, you can buy an electrically compatible replacement, but it'll put out less light than the OEM bulb.