I sent XM an emial asking what the deal was and telling them I had a z-1 with nav traffic ect.... this was my response

Thank you for contacting XM.

We will be more than happy to assist you with your inquiry. Please note that Navweather package is now available. Please contact XM Listener Care at 1-800-XM-Radio (1-800-967-2346) and have your radio ID ready. Get your 8-digit radio ID by tuning your XM receiver to Channel 0.

Note: there is no "I" (eye), "O" (oh), "S" or "F" used in the radio ID numbers.

If we can be of further assistance, please feel free to send an additional email or you may contact a Listener Care Representative directly at 1-800-XM RADIO (800-967-2346). Our Listener Care Center's hours of operation are as follows:

Monday-Saturday: 8 AM -11 PM ET

Sunday: 8AM-8PM ET

Thank you,

Alicia

Has anyone done this yet! What kind of info does it give you? Does cost more with NavTraffic?

i tried to get it when i hooked up my z1 and the guy said its not compatable. ONLY the stock acuras are.

Yup, Its debuting only in the new 2009 Acura RL and the 2009 Acura TSX as part of their Technology Package upgrade on their Navigation System.