Mmmh... No, the quality of the sound ricording is nicer than my Iphone (the sing of birds in the first video is awesome
), but your MPE sounds exactly like mine and it's far from the 340 version...
Have you got the MPPK? Because during full acceleration the outside sound is covered by the "hasssssh" of the airbox intake (the MPPK one has an additional hole): try it
The "burbling" is surely pleasant, but my expectations were much higher.