achieve

...why don't the manufacturers? It occurred to me as I was browsing the internet looking to spend money on crap I don't need that how and why are tuning firms and remappers etc able to get such high bhp & mpg gains, yet the manufacturers haven't implemented the same technology? Don't...

I know you can use a machine polisher and so on to get the headlights clean and clearer than they are.. But come on, I mean they are ridiculously clear! How can I achieve that level of transparency on my lights? Is there a trick to it? Can it actually be achieved? Or are those...