S3r Hid Upgrade - Warranty Issues?

I am thinking of pressing the button on a set of H4 35W HIDs for the Speed now the dark nights are upon us.

I see there are a large number of businesses out there selling them so would most likely go for mid-upper range ones (yes, I know they are all made in China regardless) to ensure that I don't end up with anything too cheap and nasty. My question, based on similar experiences in my car, is whether this should cause any issues with the electronics (ECU modules, warnings on the dash etc) and importantly, how would this effect the warranty.

Clearly, the light output would almost certainly be improved but if the warranty would be affected, or people have had bad experiences then I think I will stick with the stock candles which actually, aren't all the bad compared to the OEM lights on my previous bike (BMW S1000R).