My engine is a stock block Boosted B16a, I was running a built D16y8 turbo coupe and beat him by 3 cars 1st to 3rd gear. when i came to the next light i noticed smoke from under the hood, I popped it and saw alot of white oil smelling smoke from the valve cover breather, and the car idles like it has a misfire but runs fine otherwise. I'm thinking rings/ ring lands?

 

pull a compression test and check your valve seals and valve cover gasket