Mercedes-Benz M157 Stage 1
Anything from stage 1 through full custom tuning on a big twin turbo build can be performed at VAST Performance. We aren't just pasting someone else's file off of the internet onto your car.
We are changing the load, timing, fuel, etc maps in your ECU so that your car isn't just being tricked into doing something that it doesn't realize is happening(piggyback tuners). This retains all of the factory knock correction that BMW has spent thousands of hours dialing in.