Hey guys thi may seem very stupid but I'm from Spain and I can't understand very well the use of the Tein's EDFC. Would you explain it to me? And any advantages or inconvenients that it suposes when installed?

Thanks

 

look here edfc

 

Yes, I know, I read it throught, but tht's the why of this post, I don't know the difference betwen using or not the EDFC