c50 Hard Kromes
 

I am considering puting a set of Hard Kromes 2.5" American Classics on my 07 C50. Do I need to put a power comander on it. I have a friend who purchased Hard Kromes for his C90 and didn't have to put one on. I was wondering if anyone has put a set on there C50 and if they liked the sound and if they needed to add a power comander.