Where's the exhaust leak?

[grape of wrath]

Did the trick with the shop vac, I couldn't believe how many exhaust leaks I had pre turbo. I've used this method before to check the cold side but never thought about the hot side.

 

[Buick Mark]

Limped the few blocks home, seemingly loosing power

Loosing power?
An exhaust leak will not cause a loss of power when driving under N/A conditions.
Sounds like a valvetrain issue............. Rocker/s, pushrods, lifters, cam.