[samuria]

This is why I love BMW. They have the entire coding/updating software used at BMW dealerships online for download (not-official). You can change parameters for almost every feature on the car. Anything from disabling headunit warnings to injector control.

[terrywang]

BimmerCode / BimmerLink makes coding/customising supported BMW models even easier, as long as you've got a mobile device and an adaptor (e.g. OBD II to Bluetooth, inexpensive), you can DIY coding and obtain visibility into a lot of the car runtime parameters (e.g. engine oil temperature, boost, etc.) - can connect a screen and display whatever you like, turn off the pesky `ASD` (fake exhaust sound pumped into the cabin via speakers...).

What's more amazing these days is that technology like `bootmod3` (bm3) makes flashing (remmaping) stage one as easy as 1-2-3. One needs to understand what they are doing though.