I just installed a Sinister EGR delete kit on my '05 6.0 powerstroke. After fighting with the clamp on the y-pipe and breaking it, i got a new clamp and finally finished the install (a day later). I drove the truck and could not get it to boost more than 22 psi..... NO MATTER WHAT. The truck was boosting around 32 to 34 before the egr delete. So I came here read some forums and concluded that i had a boost leak. I checked the hose from the intake to the map sensor and no leaks. I then pulled the boots off the pipe from the turbo to intercooler and cleaned all the oil off. Now it will boost around 27 psi when you floor it, stay there until about 80 mph when the torque converter locks and FINALLY go up to 32 psi. Just wondering if lower boost is a side effect of the egr delete???? Sorry for the long post just don't under stand why it takes so long to get full boost.