Darnit, I'm not afraid to admit it, I love my BPM Stage 2 burble tune.
Soft at low rpms, loud and obnoxious at high rpms lol. Zero issues. O2 sensors lasted well over 130k kms, and no issues with plugs either.
And I'm not even that young, closer to 50 than 40. Maybe this is my version of a midlife crisis? Hahaha