ECU Tuning for 2006-2010 BMW M5 E60
(S85 5.0L V10 Naturally Aspirated) 
(Continental MSS65 ECU/DME)
 
Includes:
- ECUPROGRAM tune file
- ECU Tune Install
 
M5 S85 Tuning Potential:
 
- - STOCK HP & TQ - -
507 HP / 383 FT-LB (520 Nm)
 
- - STAGE 1 - -
535 HP / 405 FT-LB (550 Nm)
Can be performed on stock M5
 
- - STAGE 2 - - [+$150]
560 HP / 430 FT-LB (583 Nm)
Requires M5 Mods:
Decatted headers 
 
The BMW S85 engine is a high-performance 5.0-liter V10 engine that was used in the BMW M5 and M6 models from 2005 to 2010. This engine is known for its impressive power output and revving capabilities, delivering up to 500 horsepower at 7,750 rpm. The S85 engine features a variable valve timing system and a high-pressure direct fuel injection system, contributing to its excellent performance and fuel efficiency. The engine's unique design, including its ten individual throttle bodies, provides a smooth and responsive driving experience. The S85 engine is widely regarded as one of the most advanced and powerful engines produced by BMW, making it a popular choice among car enthusiasts who value high-performance engines.
 
The MSS65 is an engine control unit (ECU), also known as DME/ECM/DDE. It is responsible for controlling the fuel injection, turbocharging, and other engine management functions. In order to tune the BMW M5, it is necessary to modify the MSS65 map, through ECU programming, remapping or through the use of an aftermarket tuning box.