Actually, i just realized i can use thos tiny step-down converter modules, as a replacement for the filtering cap, since those can configured to not step down voltage at all, you still get 12 volts, and a good replacement of the stock filtering capaticor.
one issue though, is that i don't know about it's current capabilities so this is something i will eventually test.
in the mean time, here is a picture of the step down converter module:

http://i.imgur.com/z5FdYHT.jpg