Installed new DP/2gMani & now got probs

[BOBS90TURBO]

I just installed a new 2 1/2" downpipe and a ported 7cm 2g manifold and ported my turbo housing & O2, I installed all new crush washers and brand new ss gaskets. Now the check engine light comes on and I am blowing white smoke out the tail pipe and in between the manifold and the turbo housing, for some reason the smoke is leaking out past the gasket. I did spray pt blaster on the long bolts that hold the turbo housing to the mani but I let it run for 10-15 minutes and it is still smoking.
The engine is running a little rough but does feel like it has more power than before the installs.
Any advise on what could be causing the smoke and check engine light.

 

[BOBS90TURBO]

Nevermind, I figured it out, my coolant temp sensor was unpluged. I pluged it in and man what a differance the ported 2G Manifold,2 1/2"Downpipe, and a bunch of porting including the O2. It feels like I added 40 HP.