Did a couple of modification/upgrades to the whip.
First thing was LED Tails. LED tails were stock on 2004 models and above...so I went for an upgrade.
Next...I installed a new muffler.
This is a 1 of 1 muffler from HKS. This is made and designed specifically for the E46. The story is this was on the HKS E46 330Ci show/demo car as HKS was trying to break into the german import market. HKS made suspension and exhaust for BMWs but they never seemed able to break in. They of course made great stuff and it was R&Ded etc, but it simply never caught on. So this muffler was a Japan only model as it never passed CARB in the US let alone CA. I am pretty much the only E46 in the US with this Japan only spec muffler!