I am pretty sure your truck is doing what it was designed to do. These trucks will not allow you to dump more fuel into the cylinders than it can burn, so, until your turbo sloops up some the fuel is restricted.
Was your truck marked as a 410 ratio? Are you sure your front differential is also 373?
There is another guy here that had a 410 front and a 373 rear.
Was your truck marked as a 410 ratio? Are you sure your front differential is also 373?
There is another guy here that had a 410 front and a 373 rear.