[Skifahrer]

Hi Folks,

I've bought a TOP HiFi System incl. kables for my E93 M3. The System is from 2006. My vehicle is a LCI from 2010. I know that I've probably to flash the AMP up to a new ZUSB that it will work in my car.

But here is the big question: Should I code 677 Top HiFi or 688 H/K to the VO? Does anybody know the difference?

Best

Skifahrer

[emhtuning]

you don't need to flash AMP to work , just code your headunit with 677 and if your wiring work is correct you will get it up and running .

difference between 677 and 688 is RMS , 688 has higher watts but also has different speakers compared to 677 , so if you bought 677 then you code your car with 677

[Skifahrer]

Good to know! Thanks!