Quote Originally Posted by Crazy Asian
Their output is way stronger and doesnt scatter like just sticking it in the housing. Their colors usually are concentrated but then again they look way better.

Then there's the factor no one really knows how to do retro, HID is the only way.
Depends on what you swap it into and the quality of the retro. Put in a crap projector and what is the point? My m3 has projectors but my e28 has e-code headlamps which has very similar projector style output. No need to retro.

You will get some refraction off the projector and it will alter the color a little at different angles. Bright purple is still going to be bright people.

There are plenty of people that know how to do it and know how to do right. Just have to know where to look