Installing Nav unit in place of 6CD RF unit

Ok, toying with installing Nav in place of 6CD RF radio with sirius..
 
After install, does it need to be taken to dealer to say "I Have Nav Unit" in car..
 
Old
 

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you mean for warranty purposes?

nope, dunno if warranty goes away if I install the unit..
 
But to add the system to CAN or ects??  The computer net.