For future troubleshooting, an easy way to verify the boost control system and wastegate actuator (WGA) is working is to temporarily disconnect the factory boost reference line that goes from the boost control solenoid to the WGA vacuum canister and run a direct vacuum line from a manifold reference point to the WGA.
That will provide boost up to the internal spring tension, which for a stock WGA should be around 4-8 psi (it will also ramp up slowly). That will show the internal diaphragm in the WGA canister is working correctly and nothing has broken. If you're still getting no boost, you can completely remove the vacuum line, leave it disconnected, then very carefully drive the car and try to get into boost. You have to be prepared to immediately get off the throttle as it should spike to max boost the spring tension in the WGA will support since there isn't any boost reference on the other side of the diaphragm to cancel it out. If it doesn't spike up there might be a mechanical problem with the flapper valve broke or not sealing.
For anyone reading this and not familiar with how the stock WGA and solenoid works, the internal spring in the WGA canister is always trying to pull the wastegate flapper valve in the turbo housing shut, which would make full boost as it forces all the exhaust gasses over the turbine wheel. To counteract that and keep the flapper valve open, boost pressure is applied to the other side of the WGA diaphragm to push against the WGA spring and keep the wastegate flapper valve open.
On stock computer controlled boost, the boost control solenoid sits between the boost pressure building in the turbo and intake tract and the WGA, then cycles open and closed (duty cycle of open-to-closed) which allows a controlled amount of boost pressure to reach the WGA to counteract the internal spring and keep the turbo producing the desired boost level.
Eric H. - '04 Neon SRT-4 (eBlue/S2) - '92 Dodge Daytona IROC R/T
'91 Dodge Spirit R/T - '19 Pacifica Hybrid Limited - '14 CTS-V Wagon
'08 Cobalt SS Turbo - '14 Cruze Turbo Diesel - '02 SVT Focus (S/C)
'04 SVT Focus (EAP) - '07 Ram 1500 - '81 & '85 Chevy Citation X-11
'90 Pontiac Turbo Gran Prix (ASC/McLaren) - '93 Olds Achieva SCX W41