The only one thats appropriate for the 3 ltr is the--the he341ve--not the usual one. I didn't just decide on it, Ive been on a quest to find one for a looong time-they are very un common in America. The he351ve is too big for a mercedes diesel and can be found any day on ebay- the dodge egr lets soot build up-The electronic controller sends a false signal because the veins start to stick and the check engine light comes on and they get a new turbo under warrenty.
on the controlling boost part-i have heard to only let it go to 15 pounds max.