The ASR BMW M5/M6 Nitrous Systems come complete with everything you need to safetly add up to 150 extra horsepower to the wheels of your E60 M5 or E63 M6.  Reliability and safety were of utmost concern when developing this system.  This is why the ASR kits come standard with a re-flashed DME custom nitrous file and special ASR air intakes designed specifically for the nitrous system. Each stage includes a specially tuned DME for either a 75,100,150 shot setup.  Also included standard in any stage is an electronic digital window switch for additional safety.  This commands the nitrous to turn on and turn off at specific rpm levels so your nitrous will never  engage unless it is between preset rpm limits.  No need to worry about hitting the rev limiter when using the system.  WOT switch, and arm/disarm toggle switch also come standard in all stages.  This is the absolute best performance per $$$ system that you can add to your vehicle... period.

Please click on individual stages to find out what all is included in each system...