Had bed plate leak fixed but is hard to start?
I got my truck back last night from the dealer that fixed a bed plate leak. They pulled the motor to fix the leak. When I started it up to take it home it fired right up but almost died immediately and the turbo didn't seem to spool correctly. I let it idle for a few minutes and then moved it over closer to the service center and shut it off. When a technician came back out to drive it with me it started up again and seemed to run fine. I drove it 2hrs back home and all was good. I went to start it again this morning and it did the same thing again. It almost seemed like the exhaust was plugged or the turbo was closed. After about a minute it clears up and seems to then run fine. It never did this before I took it in for the oil leak. My truck is an 07 F-250 6.0L with 56,000 miles and the only mod is a turbo back MBRP exhaust with the cat removed.
What should I check for. The tech last night seemed to think everything was fine but it never did this before. Can someone help me here at least give me some ideas to talk to the tech about again?