Ok guyz i aint know where to start so i will just through it out there. Recently i had cracked pistons and i replace them with good stock pistons along with new piston rings and stuff. I recently changed oil, and spark plugs and stuff and what i realise recently is that the car still smokes a bit on idle and easy driving. The smoke is abit blue. The car idles fine and boost fine no stutter or anything. What can i possibly check to start diagnosing this problem? Any and all suggestions will be gladly welcomed guyz.