Installed a boostgage and observed peak boost around 8.5-9 psi.
Out of curiosity, I clamped shut the hose to the wastegate. What a difference. The car came alive even at low to medium boost because the boost came up faster. Not to mention a brief run when boost is at 15 psi. Yahooooooo!

I suspect that the wastegate is a leaky device at least in my car. Don't know it is by design (leaky valve) or it developed some leak.
Anyway, an adjustable pressure relieve valve (non-leaky type) will be installed in-line with the wastegate sooooooon!

Another observation. The turbo has very tight coupling with the exhaust and intake manifold, the "lag" is minimum. Wonder if intercooler will significantly increase the lag?

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Shane83SD