New to sit and 've seen "vp44" what does that mean and where is the map sensor located?

 

VP-44 is the designation for the electronic fuel injection pump on the 24 valve Cummins.
Number 17

Map Sensor Number 8

 

Thanks again for the info. Sorry about the cut up message the power went out before prof reading. What are the best mods to do first to the engine ? I use the truck mostly for to and from work but also tow a toy hauler 12000-14000 lbs.