These would not be useful on a Fiero unless you've changed over to a headlamp system that uses the low profile 4-lamp lenses or maybe with Hella 6054 H4 lenses (get to that later).
With my other vehicle I'd been using the up-scale halogens by GE, Sylvania and others. Most are just a higher wattage halogen bulb and the old adage "if you burn twice as bright, you last half as long" is very true. They run $55-70 a pair and have a life span of ONLY 250-300 hours (some even less). Yeah - have them on an hour a day and you'll be burning one out after 10 months. Also while running 100/80 watt bulbs in place of the 65/55 watt stockers looked great, I was concerned about melting the wiring and connector as some have reported.
There were no factory HID lamps for my vehicle that I could acquire and just swap in, so other option - HID bulb kits. There's all kinds of HID kits that run from cheap crap to overly expensive - but most still just stick a HID bulb into your headlamp designed for halogen bulbs. Not ideal because the rear reflectors inside the headlamp are not designed for HID but some swear it works great (as they blind everybody on the street).
While looking around I found these HIR bulbs (bulb on left)Information
The HIR (Halogen Infra-Red) incandescent light bulb produces 75% of the light output of HID headlights at 25% of the cost. They are a single filament bulb with the same base and o-ring style as a 9005 or 9006 headlight bulb. These bulbs attain light levels 75% to 110% brighter than stock as a result of an engineering process by GE that deposits multiple, yet almost invisible, layers of semi-reflective coating on the surface of a specially shaped quartz bulb. This coating reflects a portion of the infrared energy emitted by the filament back onto the filament, causing it to glow brighter and emit more light from the uncoated forward portion of the bulb. Although the filament gets hotter, the glass does not.
These bulbs generate NO MORE heat than a regular halogen bulb, and they draw the same electrical current as the stock bulbs that they replace. These are a great option if you wish to upgrade your stock 9006 or 9005 halogen bulbs because they will be a near direct plug and play upgrade. The cross reference numbers are: 9005 bulb = 9011 HIR bulb; 9006 bulb = 9012
There's a couple models of cars that had these from the factory.
HIR specs : http://www.headlightservice...oad/HIRspecsheet.pdf
You can buy here I think: http://hirheadlights.com/My experience:
You can only use HIR bulbs in headlamps with the metal reflector in front of the bulb.
The bulb itself has no "cap" on the end like regular halogens and you'd be blinding oncoming drivers.
My vehicle's headlamps have the internal reflector.
Now these bulbs were developed as a single filament bulb with the filament in the "sweet spot" where the infra-red rays are reflected, so most Forums I found talking about these and the few vendors selling these had the single filament bulbs. My Dodge Caravan has a dual-filament high/low halogen bulb. So I figured that's it - too bad.
BUT I found a source for dual-filament HIR bulbs to fit my vehicle - model 9007/HB5http://www.limbat.com.sg/products/search
I ordered a set $75 delivered to my door by Fed-ex in 3 days.
Sylvania ZXE run $69 at my local store by comparison (the ones with 250 hour or less lifespan).
Direct fit, installing was a snap. After getting them in and playing with them I found a minor problem.
The high/low was reversed and swapping the wires in the connectors took and extra 5 minutes.
The headamps also need re-aiming, but that was expected.
WOW! I like them.
Not as "white" as the 100/80watt blue-tinted halogens I had been using. Nor as yellow as regular halogens. A good color light - easy to see with.
What is most noticeable is the FLOOD of light across the road in Low beam, and High beams light everything up blocks away.
... and these are only 35/35 watt bulbs
but they put out 2300 lumens.
Installed them in September, so only a couple of months so far, but these should last.
I think by switching to Hella headlamps, you could then use the H4 dual-filament HIR bulbs.
Again, it would need to have the reflector in front of the bulb in there. Someone would have to check.
Sorry - don't have any before/after pics of my own.
But I researched this stuff and found these on other forums.
See their pics. I have pretty much the same results as the Corvette.http://forums.corvetteforum...headlight-bulbs.htmlhttp://g35driver.com/forums...ir-bulbs-anyone.htmlhttp://www.dsmtalk.com/foru...wthread.php?t=174610
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[This message has been edited by fierosound (edited 11-16-2012).]