Where's the exhaust leak?

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

Active Member
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.