hey guys this might be a stupid question. i have an 07 m5 stage 3 asr nitrous package. i bought this car used and don't really know much about the kit. asr is impossible to talk to and went out of business i guess. i was wondering if any of you know about the kit and could tell me if that package has performance software for the car as in not using the nos? i know it has to have a special tune for when its being sprayed. but i guess my question is can a performance software be installed for just the basic m driving functions of the car. would it inter fear with the other software? just want to know what my options are at this point. i have added headers and a pulley since and wanted to tune the car for that. any help would be greatly appreciated..