Low boost, continuous whine

Ever since I replaced the valve stem seals and got the timing right, I have had a very high a/f ratio, pegging out my wide band. At first, the car would sputter and cough any time I really punched it, but now it just doesn't respond like it should. I never get boost over 3 psi, and I was running 9. I had installed a new O2 sensor, and I thought that might be the problem, so I swapped the old one back in, and loaded a new fuel map. Now the A/F ratio reads in a better range, but I still have the lack of power. In addition, there's a continuous whine that increases pitch when I accelerate that I never had before. Could it be the waste gate? How do I tell?

You can blow into the vac line for the wga and if it passes air the diaphragm is torn and it needs to be replaced.

You maybe experiencing Vacuum/Boost Line Leaks.

Wastegate is fine by the test mentioned. Currently replacing the crankshaft oil seal AGAIN, so retesting the turbo will wait.