I have seen many threads about people upgrading their 2007 A4s with Sirius and XM satellite receivers in the side trunk compartment. Is this the same for the 2008? Anyone have the model numbers handy?

 

Lol not a real popular upgrade on A4s, eh?

 

Actually I just did it to my 2007 A4. I installed the module, but so far I can not get the head unit to recognize it. Audi dealer wants $150 to register the module with the radio. then I will still have to register the module with Sirius.