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Like 4volvos said it would help to know the color of the smoke.
If it's black it would be worthwhile hooking up a gauge to check for running fuel pressure to verify fuel pressure regulator, and also residual pressure to detect leaking injectors.
You could also try disconnecting the cold start injector to see if there is any improvement. A bad temp sensor might be fooling the ECU into letting the CSI squirt when it's not really needed.
If it's blue or white, get out the wrenches, it's gonna be a long night...
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