EGR and knock sensors were added in 2005. In model year 2008, Chrysler replaced the 4.7 liter V8 with a new version. Power went from 230 hp to 290 hp (and up to 320 lb-feet of torque) with that move; gas mileage went up, and noise and vibration went down.
The Medical Science Liaison (MSL) is a specific role within the pharmaceutical, biotechnology, medical device, CRO and other health-care industries. MSLs have advanced scientific training and academic credentials generally consisting of a doctorate degree (Ph.D., PharmD., M.D.) in the life sciences.
MSL, or mean sea level, is the altitude above sea level. Since AGL, or above ground level, changes as you go over differing terrain, we use MSL to set our altimeter so we are on a common measurement. For instance, where I live, in the Willamette Valley of Oregon, our elevation is only about 200' above sea level.