Experience a whole new level of power and performance with the DME Tuning advanced tuning software and Keller Performance's Titanium Cerakote coated Downpipes for your BMW M5/M8.
 
Tuning for specific octane
Check engine light removal for downpipes (off-road use only)
Top speed limiter removal
Extend or add burble when available
Requirements
 
Requires ECU to be mailed in.
This upgrade requires you to send us your ECU for re-programming.
You will be emailed a download link with detailed instructions after adding this to your cart and checking out.