... that they will yellow the lenses. They probably won't.
The extra heat is generated at the base of the bulb, not at the light output, so the heat builds up in the main chamber where it roasts the wiring.
I've considered developing a ventilation system to dray out heat but it needs to be water proof because the headlights get splashed with water when driving in the rain.
The other issue is that the LED bulbs disperse light out of four square patched (diode) on the face of the "bulb" whereas the halogen disperses light from a filament inside a glass bulb that equally distributes the light in 360 degrees.
The lenses in the headlight were designed for this 360 distribution, so installing the 90x4 instead of 360 will give you a weird light pattern on the road which may interfere with oncoming traffic.
Happy Boxstering,
Pedro
Pedro Bonilla1998 Boxster 986 - 312,000+ miles:
[www.PedrosGarage.com]
PCA National Club Racing Scrutineer - PCA National HPDE Instructor - PCA Technical Committee (Boxster/Cayman)
Racecar spelled backwards is Racecar
"Racing is life. Anything before or after is just waiting" ... Steve McQueen as Michael Delaney in "LeMans"
"If you wait, all that happens is that you get older"... Mario Andretti
"Being second is to be the first of the ones who lose" ... Ayrton Senna