Hi just bagged 147 1.6 TS LUSSO 5DR. So will be doing car up a 2003. On way home from aution had 30mph limit warning and beep! Next flat spot on top end accelletation? Pear shaped! Dirty Maf or Lambda sensor. Also discovered on getting home no juice or jammed mag on blauplunked cd changer in boot. Is the blauplunk standard *****? Car quite good. Needs drivers mirror but concerned on power loss. Car 84844 on clock should I be replacing maf at this mileage? Very pleasec but pensive about flat spot? Any suggestions?