I use the Neil-Med saline wash which has helped significantly but I still get one infection a year, almost always this time of year
On the exhaust, yes, it is intoxicating and I don't ever get tired of it! Go under an overpass or a tunnel and give it some gas, if you don't grin, you are not alive! My wife never fails to grin when she hears it echo off the concrete, great stuff! Get an after market performance exhaust and it gets even better. I have the Top Speed exhaust with secondary cat delete pipes which gives more growl, less weight and bump in HP. A worthwhile upgrade.
Top Speed's Cat Back System Installation