The shop that installed it ($40 cash) said that, as with all glass-packs, it should certainly mellow-out after a few weeks of use. Heck! I found that driving it through 6" of rushing water down rain-swollen Atlanta streets mellowed it out only minutes after I left the shop.

The little beast really is almost amphibious! With her new guttoral heartbeat, I think I know the perfect badge for her