I have turbocharged GSR, I put an Edelbrock intake manifold on. Before this the car was running perfect, after the install the car began to smoke at like traffic lights while idling. I suspected a turbocharger issue, so I had it rebuilt, Now it is back with a fresh turbo and still smoking. I had some issues with the pcv valve but it seems like quite a bit of smoke. Also I did a cold compression test and got 195 across the board. It doesnt really smoke at start up, just when it warms up after driving for a while. Any ideas!!!!