Switch to OEM LCI Xenon headlights from ProjectM. I don't personally own them, but they're the real deal.
What everyone has said so far is right! HIDs are not meant for reflector housings, only projector housings due to glare, improper focus, etc.
Those resistors get so hot sometimes that they have caused fires. Get rid of those immediately, because they're obviously not helping your car resist errors like they should.
Coding is the only essential way at removing errors, and it's a fairly simple process. Are you looking to spend money on any new headlights?