Bad Valve Cover Gasket?

Probably turbo or valve seals.  Pull off your intercooler and see if it has a ton of oil in it.  Then, pull off your downpipe and see if the turbo shaft has much play to it, and if you can see oil/oil sludge in the exhaust housing.

Does it puff smoke when the car is hot, but you idle it for a while then hit the gas?

You could have an exhaust leak that is causing the white smoke to come out of the hood scoop as well.

 
RyanR said:
Probably turbo or valve seals.  Pull off your intercooler and see if it has a ton of oil in it.  Then, pull off your downpipe and see if the turbo shaft has much play to it, and if you can see oil/oil sludge in the exhaust housing.

Does it puff smoke when the car is hot, but you idle it for a while then hit the gas?

You could have an exhaust leak that is causing the white smoke to come out of the hood scoop as well.
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When I had a gasket put between my turbo and down pipe they discovered my up pipe had a leak to it. I'm beginning to think this is the issue because when I pop the hood the smoke seems to be coming right from underneath the turbo right where the up pipe meets the turbo. Only smokes on quick drives, long drives i notice the smell and the smoke but the longer I go the more it dissipates. I think the up pipe is the answer but we also discovered that I have a weeping valve cover gasket on the side of my up pipe so that could be a contributing factor. Would love to figure this out been doing this for 3 months now.

 
White smoke is water based.

Blue is oil based.

Black is due to running rich.

Coolant has a very distinct smell, it's quite hard to describe.

 
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Maxxguy25RS said:
Did you find out what the leak was? I've seen the same thing minus the white smoke on a customers legacy gt and that was valve covers. I recommended both even though the left one wasn't all that bad. Right side was leaking right onto the header and up pipe.
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I'm experiencing this same issue on my 05. just the turbo side, got a feeling its a valve gasket issue. doesn't smell like coolant so id say oil.

 
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