So this could be a dumb question. I am looking to do a light upgrade to my bird. How much better can you see with HIDs than an upgraded regular bulb like a silverstar ultra?A s always , thanks for your help.
If you just shove a HID bulb in and connect the ballast, a set of OSRAM SilverStar Ultras would do you better, since it matches the reflectors.
Of course, this DOES presume you've either replaced the headlights, or at least had them polished clear.
If not, DO THAT FIRST.
Make sure your headlights are clear.
Polish them and clear them up.
Did I mention, it's silly to try to boost the light output when your headlights are fogged over?
After that, try new OEM grade bulbs (GOOD ones, not the cheapass crap Harbor Freight sells - get good OSRAM bulbs if possible, Philips also, don't buy any house brand bulbs ... Hella makes some good ones also).
Also, before you do much else, try adding a nice relay harness to beef up the current / voltage to the bulbs. They aren't cheap, but they do pay back well on how much more light you can get out of factory bulbs.
A little observed fact is that halogen bulbs get dimmer with age - most bulbs are rated as 'dead' at the 50% output level. Just putting new quality OEM halogens in will help quite a bit, and if you polish and add a relay harness - you may get the best of both worlds!
THAT said - what year is your 'Bird? If it has the 9005/9006 headlights (Gen1), then you can also go for HIR bulbs. It's what I have for low beams on my Cougar with the GM headlamps, and I can see a mile marker 1 mile down the road (i.e., if I'm passing Mile Marker 28, I can see Mile Marker 29 - or at least, something there which turns out to be MM29 when I get close enough to read it!) That's worth considering.
You can find out more about HIRs at http://hirheadlights.com/
. Do check eBay and Amazon (especially Amazon!) for alternative vendors, though.
Due to how they work, there will never be a HIR for a dual-filament bulb like the 9007 later TBirds and 91+ Cougars have.