i have a 2005 6.0 i had the head gaskets done arp bolts the updated egr tube big one,after it was done the tubo boost started to fluctuate then it started blowing the oil out of the tail pipe the intercoolertube also broke the plastic one i got a used turbo put it on i still have no boost i have two coes 671,299 ime get lots of oil checked egr opening cleaned carbine put new egr in whats next