leon1987

I have recently just replaced the bottom end of my engine and had a new hybrid turbo fitted. the garage which built my engine back up put in 5w 30 fully synthetic engine oil in and when i rev my car when warm a bit of smoke comes out the exhaust then when ticking over nothing there. when im driving and i take my foot off then put back on it will smoke a little again. does anyone know what this is? could it be the oil or another problem? thanks