Man, I don't like the carb cleaner trick anyway. Too much risk and little reward, the same goes for starting fluid.
Is your VECI sticker still there? That gives a vacuum schematic. You lost a big one if you didn't crack the intake manifold. The only 2 big ones are the PCV and the brake booster line. Trace the brake booster line down from the booster back to the engine.
You're turboed right? You probably don't have a PCV. I bet it is capped off at the port, and if memory serves me correctly, someone said that port was just behind the TB. The PCV itself is probably just a simple hose turned down.
Did you check the air intake to see if it came loose? That will do something similar to what you're describing. Lack of a decent idle might be what is upsetting the power brakes. The engine has to be running, and running at enough rpm for that to feel right.
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