That sounds terrific! And the great thing about exhaust mods is that they generally offer a host of improvements for relatively little cost.
Only negative I would say, as a sad ageing guy, is that although on previous cars I owned my main objective would always be the "wake up the entire 'hood at any time of day or night" approach, I feel I might want to slip
under the radar a little more these days.
That's one reason why I went M550i rather than "full M" experience: the M-performance cars do have a certain
understated power about them, which I like.