so i sold this car awhile back and now its mine again LMAO. im in the middle of redoing the entire cooling system and removing a/c and all the other junk associated with it it , what i need 2 know is what direction is the coolent flowing ??? if ur looking at the front of the car there is a pipe that goes left 2 the p-side from the thrermostat and a pipe that goes right 2 the drivers side . which way is the water moving ???? second there is a little aluminum cooler thing that attaches to the expansion tank and the bottom of the rad has 2 hoses atached 2 it . is this a cooler of some sorts? if so can i remove it and loop the hoses back around ???

 

Forgot to say its a 2001 325I auto E46

 

That little cooler thing sounds like your power steering oil cooler to me.