Hi gang,

I'm planning to retrofit my 2004 X3 with NAV and Assist (premium package). Can somebody tell me what's the best way to go about it if I want to DIY?

I need answers to the ffg:
1. Where to get the cheapest ULF module and what part no.
2. Do I need to remove the existing TCU?
3. Would I have voice recognition feature?
4. Would I need to bring my X3 back to the dealer for recoding?

Thanks