Yesterday I noticed that when I took my car past 7000 rpms a light came on saying engine malfunction reduced power. I turned the car off and started it back up and it when away. Sure enough once I took it up to higher rpms it did the same thing. I noticed that the car lowered the redline so I wouldn't be able to even get to 8000. But the third time i started the car up it went away and didn't do it anymore. My car was tuned about 3 months ago but have never had this problem before.
Has anybody had this problem in there M before, I just figured that I would check here before I call my service advisor.
Thanks for the help,