Something weird happen today morning and I hope it doesnt cost me a bomb to get it done tmrw. Other guru's out there please advice me if this has happened to anyone else and if there is a solution for this.When I started the car today morning, it was all good and after driving for a about 15 min, as I was coming to a stop at toll booth and suddenly the car was jerking so bad and the RPM was fluctuating (500 to 1200). I pulled over and the engine after massive struggle (as if no air is going in) died. The car started when I tried but without pressing the throttle, its still jerks and jus dies off. I have jus bought this beast (525i M sport, 160k milage) about a month ago and this is my first experience with UDM. I decided to drive back to my home and not planning to take risk any futher for the day. Drove back home and everytime the car comes to a stop the engines just rattles. While driving it feels powerless in low rpm range. Parked it in my house and took my more reliable Waja to work. (was a good decission to keep my trusted waja for rainy days like this). Supprisingly when I got back after work, decided to start the car it was all ok. Took it out for a spin and after 20min it was still behaving normally. Anyway, tmrw Iam goin to take my new baby to Jack of Auto Werkz, JB. Lets see if he manage to find any fault. The only recent change was that I changed from RON 95 (which I have been using since I got the car) to RON97 hoping to feel more boost and extra milage but this doesnt seems like it. Friends, please let me know what I should be watching out for and what could be the reason. Will keep you guys updated after my visit to Jack. Cheers,